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FAQs about Lobsters
Related Articles: Lobsters, Slipper Lobsters, The
Selection and Care of Spiny Lobsters in Home Aquaria by Adam Jackson,
Related FAQs: Micro-Crustaceans,
Amphipods,
Copepods, Mysids, Hermit Crabs, Shrimps,
Cleaner Shrimps, Banded
Coral Shrimp, Mantis Shrimp, Anemone
Eating Shrimp, Crustacean
Identification, Crustacean Selection,
Crustacean Behavior,
Crustacean Compatibility,
Crustacean Systems,
Crustacean Feeding,
Crustacean Disease,
Crustacean Reproduction,
Panulirus versicolor (Latreille
1804), the Blue Spiny Lobster.
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Lobster holding Tank and
Ammonia 10/29/07
Hello Crew, I was hoping you can help in asking a question for me?
<More than one!>
I recently set up a 180 gallon lobster tank in my restaurant. I've yet to add
any lobster but was concerned that if there was some ammonia in the tank
(1-2ppm) or Nitrite would that have any effect on humans?
<No problem for humans>
would it be dangerous to eat?.
<No... these are common readings for captive crustaceans in such settings... Are
not detectable when the animals are prepared for consumption. Are mainly a
problem in adding newly arrived stock... the bioload increasing very quickly.
Hence the use of fluidized bed filters, oversized bio-media period... oh, and
chilling of the water/system to greatly reduce the metabolic rate of the
animals>
I don't plan on have deteriorating water but just a worse case scenario. Thank
you, Joe
<Not a worry, concern. More important to try and keep ammonia, nitrite low to
preserve the health, prevent weight loss of the stock. Bob Fenner>
High load lobster tank
10/25/07
Dear Bob, Anthony, Alex, Wendy, Adam, ... and Friends:
<Hello Wences!>
Congratulations on a service that answers the most difficult questions like a
sea breeze. I hope you can help me some with my efforts to build a lobster grow
out tank on as close a circuit as possible in the North of Spain.
<Neat>
Now that I am about to retire from engineering I want to grow lobsters for fun
(and if possible butter). I have made my research (including reading most of
your marvelous write ups in WWM) and would like to use methods such as proposed
in “Stocking density and shelter type for the optimal growth and survival of
western rock lobster Panulirus Cygnus” with the local, cool water, lobster P
Elephas. Only “small” difference is I need to use a closed, recirculating water
system with the fewest possible water exchanges.
<Okay>
I am planning on an 80 gallon tank, which at the end of the grow-out will be
stocked at the 1% level (3, 2 kilograms or 7 pounds) of lobsters, being fed to
satiation (2% of body weight equivalent to 64 grams of mussels and /or pellets)
<Ok...>
I plan to use (unless you suggest something better) dim blue lighting during the
day and infrared to observe behaviour by night.
<Sounds fine... red would be better>
I understand the water treatment facility may need to be larger than the tank
itself and am planning for a protein skimmer working on the surface water and a
bottom drain circuit that will first decant as much solids as possible and then
treats the effluent.
<All right>
My question is first if you can comment and improve on the above and second if
you can help me with the design of this treatment system. After reading your WWM
recommendations I understand there are these possibilities:
1. Wet/dry filter plus sulphur denitrator in sump (With /without additional
skimmer).
2. Deep calcareous sand bed for denitration (also with /without additional
skimmer).
3. Lighted algae refugium with deep sand bed for denitration / dephosphation
(also with /without additional skimmer)
<This should work>
Which will you recommend and what dimensions do you consider adequate?
<Only practice can/will tell here... measures of metabolite accumulation, ready
large volumes of water to change out... Will you be chilling the water? This
can/will greatly affect the rate of metabolism, gas solubility...>
Bear in mind that if we are successful we shall have a 15000 gallon tank for an
upgrade: A friend’s swimming pool!!
<Yikes... do bear in mind that Lobsters are territorial, cannibalistic...>
And also that you will all be invited for D&D (Diving and Dinner) here in
Bilbao, Capital of the World in the beautiful Bask Country
Cheers Wences
<You're on! Look forward to swapping recipes and drinking fine red wines with
you in future. Bob Fenner>
Larval
crustacean ID – 09/14/07
Hi there
I would like to know what that is ... shrimp ? crab? it has a body
length of 4cm and it seems to eat jelly fish
regards
Olly
<It's a larvae crustacean, specifically the "phyllosoma" stage of a
spiny lobster, probably Panulirus sp. but I'm not sufficiently expert
here to be sure. Anyway, they don't eat the jellyfish, but hitch-hike,
drifting about for a period of around a year, at which point at a length
of 4-5 cm they leave the jellyfish and settle down on the seafloor. This
period of drifting allows them to travel vast distances and so colonise
parts of the sea where they simply wouldn't be able to access as
lumbering adults. "Phyllosoma" means "leaf-shaped", a particular
reference to their very thin and flat body. Cheers, Neale.> |
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Re: Lobster, Reef or otherwise, comp. 2/13/07
Mmmm, actually did some research from various sources on the Purple Reef
Lobster. Seems that Scyllarides, Justitia, and Panulirus are not reef safe,
but from what info I gathered, was that Enoplometopus was reef safe.
<Not in my experience, I assure you... If hungry, will eat most all>
Example, quoting Julian Sprung's statement from his book, INVERTEBRATES, A
QUICK REFERENCE GUIDE, "Reef safe, usually docile, but capable of harming
small fishes".
But, feel you are more knowledgeable and experienced than he, so I will go
with your advice.
Thank you,
James
<Thank you for this follow-up my friend (and fellow pet-fish acolyte). BobF>
Starfish Compatibility 2/9/07 - 02/09/2007
I have a 25 gallon tank FOWLR tank and wanted to get a Serpent or Brittle
Star. The only thing is that I have a Chocolate Chip Star and Purple Reef
Lobster. My question is do you think all 3 will get along?
<Should be no problems with the starfish, I'd be more concerned with the lobster
going after small and/or sleeping fish. James (Salty Dog)>
<<James... no... the Lobster is going to be a constant question mark... the CCS
could eat the Ophiuroid... RMF>>
Culturing Lobsters- can't seem to control the water chemistry 11/28/06
Hi,
<Hello, Michelle here.> I'm experimenting with lobsters for a project in my
marine biology class. <I'm presuming the experiments don't include butter!>
I have had 4 1 1/4 pound lobsters for about a week now and my ammonia level
keeps spiking. At this point my set up is 3 large Tupperware storage tubs (one
with a divider down the middle to separate two lobsters) with about 10 gallons
of a mixture of Long Island Sound and an Instant Ocean mixture of water in each.
I have a 10 gallon filter and two aerators in each tub. I feed my lobsters raw
pieces of clam about every three days and thus far they have not seemed to be
defecating much. This morning, I finalized a new tank filling it with completely
new LIS and Instant Ocean Water. I tested the ammonia level before introducing
two of the lobsters to the tub and it was at the control level. Approximately an
hour and twenty minutes after I had placed the pair of lobsters in the tub, I
tested the ammonia level again, it had spiked! Since then, I have treated the
water with a sort of ammonia eliminator. Two of my lobsters in the most
concerning tank seem to be a little more agitated than the other two. However,
that could just be their personalities. The water does not appear cloudy and I
have my marine biology teacher working along side me. She feels that they should
be okay for now. But I would like to figure out how to keep my tanks completely
stable because my deadline is nearing. If you have any advice for me, I'd
greatly appreciate it. <Wow! Nice to hear about such a program being offered at
the high school level! Good for you! Kudos to your teacher and your high
school!
If this is only a temporary project, of say, less than a month, the quick and
easy answer here is frequent (possibly daily) water changes and increasing the
quantity of water if possible to make the environment more stable. Also feed
very sparingly. The better long term solution would be to set up an appropriate
home, which would include living biological filtration. There is a lot to
learn/read. The following articles are good starting points. Hope that
helps. Good luck to you with your experiment!>
http://www.wetwebmedia.com/estbiofiltmar.htm
http://www.wetwebmedia.com/marine/setup/filtration/biological/biofiltr.htm
http://www.wetwebmedia.com/nutrientcontrol.htm
http://www.wetwebmedia.com/marine/setup/filtration/marineFiltr.htm
Thanks a lot,
Amanda John
Inappropriate Fish Mix...and Now a Red Lobster Too! - 09/12/06
Thanks for the Great Website!!
<<Welcome>>
I have a 100G saltwater tank with 2 Yellow Tang, 1 Coral Beauty, 2
Clown Fish, 1 Tiera Batfish, and 1 Clown Trigger.
<<You're overstocked with a mix of inappropriate tankmates my
friend. The two Yellow Tangs will likely not get along for the long
term in this size system...the Tiera Batfish is a difficult to keep
fish that will outgrow this system...and the Clown Trigger will also
eventually outgrow this tank...but not before killing all else in
it. We're here to help, but please do help yourself (and your wet
pets) by researching your purchases "before" you buy>>
To help combat dirty sand, I purchased a Red Lobster that has been
at my LFS for a very long time.
<<Another inappropriate choice. This creature is not a substrate
cleaner...but it will stalk/devour your fishes, that is if the isn't
big enough to get to it first>>
I was under the impression that if a Red Lobster was well fed; he
would not bother with his tank mates.
<<May help "some"...but doesn't change their nature/instinct to hunt
for their meal>>
After adding the Red Lobster, I fed him 2 times. This morning I
found my Batfish dead, wedged in the rocks.
<<Likely unrelated...and the inevitable outcome for this delicate
species in this tank>>
Should I return the lobster (if I can catch him)?
<<Indeed...as well as the Clown Trigger and one of the Yellow
Tangs>>
I fear for the rest of the tank.
<<Is well founded. Please spend some time reading/researching and
choose more suitable inhabitants for your system. Let me get you
started here:
http://www.wetwebmedia.com/fishonsetup.htm >>
Purple Lobster Injured 8/16/06
Hi guys.....
<And gals...>
I've had so much fun reading and educating myself about reef tanks here.
I have a 125gl marine tank cycling, just about done. A friend was tearing down
his 8 yr old reef tank and gave me his purple lobster along with some
snails, hermit, etc. I had about a 45 minute drive home...went to start
acclimating everyone with a drip setup and the lobster had one of his front
claws broken off!!
<Happens... with good care, nutrition, time... will re-generate this limb>
I was soooooo upset for him. It must have been crushed by some shells is all I
can think of. Will he be able to still feed and care for himself with only one
front left??
<Very likely so, yes>
Not sure what to do.
Lisa
<Just the above... Bob Fenner>
Re: Purple Lobster Injured 8/16/06
Thanks Bob..............
Been sweating it over here watching him like a hawk but he appear active
enough and is moving around "filtering" food it looks like. Guess we'll just
be calling him "Lefty" for a while!
<Heeeee! Or "Lucky">
Thanks for setting my mind at ease a bit.
Lisa
<Glad to. Bob Fenner>
Purple Lobster? Eating machine 6/23/06
Hello WWM!
<Deborah>
I recently bought a Purple Lobster for my 24gl reef tank. I had looked him up on
one website before buying him, and it said that they got no more than
3in. Well, after further research (unfortunately after I bought him) I found
that they can really get up to 5in. I really like my lobster, but if he is
going to be a big threat to my fish (1 firefish, 1 barnacle Blenny),
<Will eat these fishes...>
then I would like to give him back to the fish store. If that is necessary, then
how can I catch him?
<Best to systematically remove the decor in this system, use two nets to direct
this crustacean into a glass container underwater...>
Being nocturnal, I rarely see him, and I have bonded with my fish and would not
be a happy camper if they were eaten!
Thank you!
Sincerely,
- Deborah
<I would do this soon. Bob Fenner>
Lobster/Macro Algae Refugium? 5/11/06
Dear Crew,
<Hello.>
Long time reader, first time poster!
<Awesome.>
Great site, it has helped me in countless ways with my new salt water venture.
<Great to hear.>
My question is:
<*Drum-role please.>
I have a 55G tank and I am looking into converting a 10G aquarium I have set up
that currently exclusively houses a Purple Lobster into a refugium.
<Cool.>
(He was put there based on recommendations I read in your FAQ's, plus I was
losing fish, & I came home from work one night to see him munching on my coral
banded shrimp!)
<Not uncommon.>
My question is, is it OK to convert this tank into a refugium and still let
the Lobster live in it?
<No, defeats the purpose of the pod-generation, not to mention he will be
destructive to any macro-algae you put in there.>
The purpose of the refugium is to help lower my Nitrates which hover around 10
PPM. I plan on the 6" DSB and Chaetomorpha, per other FAQ suggestions I have
read.
<Yeah.. if that's what you want get rid of the lobster.>
Thank you for your time, I have spent many hours perusing the site and, like
most people, have found MANY answers from the FAQ's.
<Great.>
Thanks,
<Anytime.>
Craig
<Adam Jackson.>
Stocking Levels .... and types 4/18/06
Hello WWM Crew!
<Jeremy>
I wanted to know if I am overstocking my tank.
<Mmm, not from what shown. Though the lobster will eventually consume about all
here.>
I tried to be as detailed as possible usually when I read peoples emails they
lack specifics which you always ask for. I have read many articles on your web
site and found many important changes and tweaks for my setup. Besides the
stocking question how long have (who ever answers) been doing this and are any
(all) of you marine biologists?
<Mmm, my bio. is posted on WWM... am an old timer academically and
industry-wise>
Thanks for the help with the web site and information, I am an avid fan of your
picture of the day and have been getting more people at my work that like fish
to view it.
Marine Tank Setup
Mechanical Parts
75 Gallon Glass Tank
¼ Inch Lexan covering top
1 Red Sea Prizm skimmer on side of tank
2 20K VHO Fluorescents 40 watts 12 Hour cycle
2 Actinic 40 watts 6 Hour mid day cycle
1 Fluval 304 Canister Filter inline 5w TetraTec UV
1 AquaelUnimax Pro Rated 90 Gal Built-in 9w UV
2 Profile Powerhead 602
1 Coralife Digital Thermometer
Quarantine Tank
10 Gallon Tank
1 inch Live Sand bed
1 Penguin with bio-wheel Filter (rated for 55 gal)
1 Heater
1 18inch 15watt 20k light 12 hour cycle
Non-Livestock
2 ½ inch Live Sand with crushed coral mix
40lbs Approx Live Rock (Fiji)
50lbs Approx Tufa/Lava Rock
15lbs Approx Rainbow Rock
1 Green Polyp Colony 4 inches from surface
Fish Livestock
1 Yellow Tang 4-5 inches
2 Yellow Tailed Damsels 1 inch
1 Blue Damsel 1 ½ inch
1 Lawnmower Blenny 1 inch
1 Yellow Clown Goby 1 inch
1 Sleeper Banded Goby 3 inches
3 Scooter Blennies 1 ½ - 2 inches
Invert Livestock
1 Spiny Blue Lobster
<Keep your eye on this... predatory>
5 Turbo Snails
5 Astrea Snails
5 Checkerboard snails
5 Cerith snails
1 Electric Flame Scallop
<Rarely live>
5 Oysters (Seafood variety for lobster)
5 Clams (Seafood variety for lobster)
5 Hermit Crabs (Variety)
2 Condylactis (small pink tips)
1 Feather Worms
1 Bubble Tip Brittle Fancy Sea Star
1 Tiger Tail Sea Cucumber 6-8 inches
Water Stats
Salinity: 1.025
PH: 8.3
Temp: 77-80 F
Nitrate: 40ppm
<Too high by about twice>
Nitrite: 0ppm
Ammonia: 0ppm
Feeding Schedule
Liquid Phytoplankton 5ml once every other day
Frozen Mysid Shrimp twice daily one cube at a time
Frozen Silverside fish 1"x2" inch chunks once every other day
Water Changes
7 ½ Gallons every 2 weeks
Instant Ocean salt mix brand
Supplements Used (per directions on bottle)
<Add these through the pre-mixed water changes>
Marine Buff
Calcium
Iodine
Trace Elements
Strontium & Molybdenum
<Bob Fenner>
Palinurus in FW, FLA 4/15/06
Hi you appear to be the most knowledgeable person on the web about
crustaceans,
<Assuredly I am not>
I have a question. I saw a Caribbean spiny lobster in a freshwater canal in
south florida.
<Interesting... I have caught, eaten quite a few of these...>
I must also point out that Snook, tarpon, Mojarra and other normally saltwater
fish have been locked in these canals. But how can this be explained?
<More euryhaline than I'd imagined...>
Maybe it got transported from some far away place where freshwater spiny
lobsters are common. Maybe it got properly acclimated, help! am baffled
<Perhaps got "blown in" by a storm... maybe circulated in at an early pelagic
life stage? We have another palinurid species here in S. Cal. (P. interruptus)
that lives in surprisingly fluctuating and poor water quality in our bays... Bob
Fenner>
Blue lobster problems - 03/11/2006
Tank setup: 110 gallon tank large filter, pumps, reserve tank (all proper
setup for size of tank)
Animals:
(1) 2inch Panulirus versicolor blue spiny lobster
<... a beautiful animal, but more of a voracious predator than scavenger...>
(1) 4inch yellow tang
(1) 3inch scooter blenny
(1) 2inch flame angel
(1) 3inch Bicolor Pseudochromis
(1) 2inch 'Nemo' clown fish
(3) 1/2 blue/green chromis
(1) 4inch royal purple clam
(1) (base size: 1 inch) purple sea urchin
(1) 7inch brittle star
(2) 1/4 inch chocolate chip starfish
(2) 3inch peppermint shrimp
(1) 1inch flame scallop
(1) (body 1inch) arrow crab
(10) assorted sized cleaner snails
(9) assorted sized cleaner shrimp
(1) 4 inch bubble anemone
(2) 1 inch purple mushrooms
(2) 4 inch purple mushrooms
(1) 9inch rose colony polyps
(1) 3 inch "Waving hand" xenia colony
Problems:
1:We just got rid of a 5inch aggressive blue damsel and our yellow tang is now
bullying (i.e. biting, chasing, nipping, posturing) everything else (except the
lobster). Is there anything we can do to stop this?
<Mmm, get a much larger system... yours being as crowded as it is is "raising
the agonistic behavior bar"... Maybe adding more macro-algae or dried (human
food) algae will curtail this...>
2: Our lobster is eating our snails and crabs left and right!
<Ah, yes... will ultimately consume all else... Not a joke, a prediction based
on personal experience>
We want to feed him something meaty, but are not sure to go about it. Also if we
feed him these meat chunks, will he stop eating our snails and crabs?
<Not for long... This animal is mis-placed here... if you have/had a tied-in
"sump" you might be able to keep it there. But the amount of waste produced is
even problematical...>
3: The lobster is now eyeing the clown fish. The clown fish has no proper
anemone because the scooter blenny tends to bump into things and we're afraid
he'll get stung and die. To protect the clown fish, should we remove him from
the tank?
<... I would trade out the Palinurid>
4: Our royal purple clam is not doing too well. We feed him Marine Snow every
day,
<This product has almost no nutritive value.... Please see WWM re Tridacnid
Foods/Feeding/Nutrition, Systems...>
but he just won't open at all most of the time. Is this normal?
<No... is an indication that "something/s" are wrong... Likely too much
commotion...>
Thank you so much
~Everyone who takes care of the saltwater tank @ Big Walnut High School
<"In my day" we were lucky to have guppies in school! Cheers, Bob Fenner>
Purple reef lobster 03/07/06
Hello,
I had a question about a purple reef lobster. (I want one.) How well would it be
in a 20 gallon aquarium with 2 green Chromis (I read on WWM they
should be okay), a firefish and a Condy anemone?
<... not a compatible mix...>
Is it likely that if well fed, it might not be so bother some? The guy at the
fish store said it was a scavenger and reef safe (but than again they said the
urchin was reef safe...).
Thanks
Brian
<Please, take your time... look up each of these species on WWM... read their
System FAQs, Compatibility FAQs... Bob Fenner>
Differences between lobsters/crayfish/species....? 1/26/06
I recently purchased an "electric blue lobster" from a trusted pet store,
but when I search the internet for
information, I find many different names/species/varieties.
<Yes... you start to understand the value in scientific names... many organisms
have more than one common moniker, and these are often applied to more than one
species>
I called the pet store to see if they knew the Latin name
of the species they sold me, but to no avail. I have searched for hours for a
way of determining what it is that I have
actually purchased. Could you enlighten me as to what the physical differences
are between lobsters versus crayfish,
species of crayfish,
and how to identify what variation I have?
<Can... a beginning... both common names are applied to a few groups of
crustaceans... marine and fresh... that is, the terms crayfish and lobster are
often used for different taxonomic groups... They are not definitive as to their
systematic classification>
I also wanted to commend you on the fantastic website you have here. I am
extremely impressed (almost a little
overwhelmed) by the enormous amount of information you supply. Thank you!!
Tammy
<A photograph will be useful here. Have you read through the freshwater and
marine articles on crayfish and lobsters posted on WWM? There are some pix,
systematic information, identifications there. Bob Fenner>
Langustino from the foodstore for pets
Sup,
I have a pretty funny question to ask, and I'm serious and I feel dumb
asking the fish store. Could you *buy a lobster* from the *supermarket* and
put it in your tank. if you did *what would it eat* and *would it hurt your
fish?*
thanks s' much
Ryan O
<I have kept both the Homarus americanus and Panulirus interruptus (from the
East and West U.S. coasts respectively) bought from such outlets in captivity...
both require chilled systems, good filtration, circulation, aeration, and yes,
both clawed and spiny lobsters eagerly eat most all other life kept with them.
Bob Fenner>
Somebody Went Under a Dock, And There They Saw a Rock,
But It Wasn't a Rock, It Was a Rock! Lobster! (a.k.a Panulirus) 12/10/05
Hi Everyone at the WetWeb,
<Hello Paul, Adam J with you tonight.>
I'm hoping that you might be able to identify a green banded, orange tentacled lobster I saw whilst scuba diving in Florence Bay, Magnetic island, Queensland (tropical) Australia - a big ask I know, but I have trolled the web for a week now with little success, so I jumped at the chance to ask you for some assistance.
About a good adult fore-arm in length of carapace (looked a monster underwater wearing bug-eyes!), no claws, but with tentacles at least a metre in length... As I mentioned earlier, green bands
(perhaps just shell sections) from tail to eyes, then orange 'nose' and 'feelers'! What I would have done for a Nikonos u/w camera!
<Well without seeing it I will say the best I can do is narrow it down or make a guess, so bear with me my friend. From your description, especially the color and claws (lack thereof) and area will help somewhat.
I'm pretty sure you have a spiny lobster in the Panulirus genus, if I had to take a guess at the species I would say possibly P. gracilis (Green Spiny lobster) or P. versicolor (Painted Rock Lobster).>
Thanks,
<Quite Welcome.>
Paul Houston
<Adam J.>
Rock Lobster - 12/11/2005
Fantastic help - thanks Adam!
<No trouble, my pleasure.>
I've noted down the species type you suggest and I'm going to go running
back to Reef HQ (AIMS is too far away, at this stage!) and see if they can
find some pics in their smallish library.
<Cool.>
I'll let you know how I go. Thanks again for your help!
<Yes please let me know, I hope my "guesses" will at least be close.>
Paul
<Adam J.>
Lobster Death - 11/25/2005
I am so sad...my purple lobster "Mitts" died today.
<So sorry to hear of this.>
I have had him in my 10g aquarium since the end of May.
<Too small a system, long-term....>
He's molted many times and done quite well.... His antics have been interesting
for sure.
<Very neat animals.>
Lately he's started to eat my cleaner snails so I had to stop purchasing
them.
<Mmmmmmm, escargot....>
There are also three different types of Damsel fish in the aquarium.
<Too much life, too small a tank.>
They are doing well. I tested the water and it's clean....
<Readings? There's a lot more about water than "clean".... Ammonia, nitrite,
nitrate, pH, salinity, calcium, alkalinity, iodine.... All are important
factors, especially with invertebrates like Mr. Mitts.>
I did do a water change (25%) the other day. This morning he was dead...just
sitting on the bottom in the sand. Do you have any ideas as to why he died?
<Mm, not without a lot more information.... but my first guess is that calcium
and/or iodine were too low.>
Do they have a short life span?
<Not all that short.>
Is there something I should have or could have done differently?
<Again, without more information, I really don't know. At this point, though, I
would very strongly urge you against adding any more animals to this tank - even
with "just" the three damsels, it's very fully stocked.>
He will be sorely missed.... Mr. Mitts.....
Thanks so much, Aimee
P.S. I have been having minor problems with red algae and was out of town for
two weeks and my pet sitter didn't know to turn the light off in the tank each
day.... could that be what happened?
<Not very likely.... Algae and light aren't directly harmful to most animals in
most cases. I do wish you the best, and hope for the best for a future Mitts
for you in a larger tank some day in the future.... Wishing you
well, -Sabrina>
Lobster Death, Water Testing - 11/26/2005
Thank you Sabrina....
<Sure thing, Aimee.>
With regards to the testing...I only tested for ph, nitrates, nitrites and
ammonia.
<And salinity/specific gravity, too, I hope?>
What would you recommend using to test for calcium and iodine?
<I'd go with Salifert or LaMotte. LaMotte, though VERY high quality, comes with
a very high price tag, too, so that may be a deciding factor. Iodine's a
toughie; very frustrating/difficult to test. Some folks don't test it at all,
but with the lobster's death, it'd be a good idea to know where you stand on
it.>
Once again, thanks for the input....
<Any time, Aimee; and again, I'm sorry for your loss.>
Hope you had a happy Thanksgiving!
<I did, and I do hope you did, as well! Thank you.>
Aimee
<All the best, -Sabrina>
Large Lobster Question 9/28/05
Dear Crew, So, I have been to a couple aquariums and I have always been
fascinated by the large Caribbean Spiny Lobster. I'm wanting to know what is
necessary to maintain one. Would a 90 gallon be sufficient if he was the only
one in there? Or would I need more length than height? <Almost any aquatic
animal should be kept in a tank that as at least as large in every dimension as
the full adult length of the animal. A 90 gallon tank would not meet this
requirement for an animal of this size and the animal would not be able to turn
around in it. Also, there would not be enough space to create sufficient cover
in the tank and leave some moving room for the lobster.>
I am trying to get a hold some lobster trappers to see if they will mail me one
live, as I can't find any in the online fish stores. I have posted looked over
you FAQ for lobsters, I have posted a question, but I didn't get the information
I need (invertebrates key word: large lobster question). Any thoughts and
guidance is appreciated. Sincerely, Danny <The commercial collection of these
animals is strictly regulated. Part of the reason that they aren't available
from aquarium outlets is that specimens of suitable aquarium size are illegal to
harvest.>
Thanks for taking the time to read my letter. Allright, what I am trying to do
is purchase a Spiny Caribbean Lobster and place him in a 90 gallon at home. I
understand they reach two ft. in length and are a warm water species. What I
don't know is the feasibility or if I am better off buying a tank with more
length. The lobster will be the only animal in the tank.
<In addition to my advice above, I would suggest that you focus on a tank with
more width. While still a bit small for such a large animal, a 120 might be
more suitable with it's 24"x48" bottom. I personally would lean more toward a
30" minimum width.>
I want to order one from an online lobster trapping company so it can be shipped
home. That way I can skip the years of waiting for him to get large. <It may be
difficult to get a commercial fishing outfit to send you one lobster and to pack
it in a way that is consistent with long term survival. Also, large adult
animals usually adapt poorly to aquarium life.>
I have read your FAQ and I have posted in the Chat Forum under the name Pariah
(search large lobster question), but I didn't get any good advice. I looked
online for a looong time but found only recipes on how to cook them. So I ask you
for advice. Thanks, Danny Doyle <My best advice is to compromise and choose a
species of spiny lobster that is legally available in the trade at more
reasonable sizes and allow it to grow larger in your care. You will end up with
a more attractive specimen that is easier to obtain and will have better chances
at survival. Best Regards. AdamC.>
Question about spawning Anthias <?> and a greedy Red Reef Lobster
7/26/05
Bob,
<Susanne>
First off, I have several of your books, and have the utmost respect for
your knowledge and your attitude about fish husbandry at home and care of
our reefs in the seas. I was grateful to find your email address since our
aquarium at home has suffered some unusual behavior lately and we could use
your help.
<I'm bringing you in as a character reference next bank loan ap.!>
We have a 135 gal saltwater, predrilled tank, with some live rock, a wet-dry
system and a protein skimmer. I've been keeping saltwater fish for about
10 years. This system was set up in February. Over time, I stocked it with a
Red Reef Lobster,
<Great animals... gorgeous, but a bit opportunistic re feeding...>
1 male and 2 female bicolor Anthias, a few hermit crabs,
astral snails, a yellowtailed blue damsel, 1 Kole tang and an imperator
angel. The tank has been doing well. The lobster has molted twice already.
About 3 weeks ago, my boyfriend and I noticed that the females were hiding
deep in rock crevices. The male was also acting peculiar. About 10:30pm we
discovered little "things", swimming frantically all over the tank. When
they hatch they are white free swimming, and will swim to the lights, and
generally like to hang out on the edge of the tank, often slightly above the
waterline (but still in the lip where the surface tension). The size on
hatching (or at least appearing) varies from about 3-7 mm. They are
worm-like, no legs, definitely have eyeballs. They can morph their shape
from short and stubby to very elongated. Hatching has been continuing for 2
weeks, for an hour or two late in the evening - just before the lights go
off. All of the Anthias (male & female, though more pronounced in the
female) retreated into holes and stayed there for some time before the
hatches. The hatchings are still continuing 3 days after the last Anthias
lost a fight with the lobster, although the number has diminished
significantly. We captured them using a flashlight and a glass and
transferred them to a heated incubator bowl. Here they generally stay on
the side of the bowl, but they spend part of their time in the live sand
<... a strong clue... not Anthias>
we added. They are being fed ZooPlex twice a day immediately after an almost
complete water change (the bowl has no filter or aeration). We use aquarium
water for the changes.
Since the hatching, they have not changed significantly from their original
shape, but have approximately doubled in length. There were some losses
after the first night, but the current survival rate appears quite good - no
significant decline in numbers is noted. There isn't much in the literature
about spawning Anthias, other than they're pelagic egglayers, which has been
consistent with the male's behavior. The behavior patterns across the
board are consistent with what information we have been able to find about
spawning in general, but the transition from larval state to fish seems to
be taking a long time. Any information on how long it will take for them to
move to a 'fish' form or recommended food etc would be appreciated.
<Am actually thinking these aren't fish at all... but pelagic life stages of
polychaete worms...>
We have
not been at all scientific in noting times/measurements etc, if there are
some you would like, please let us know, and we will do our best to oblige.
Or, if you think we have something other than baby Anthias in our nursery,
we'd also appreciate your input.
<Any chance for an image?>
Meanwhile, the lobster, who had been dining very nicely on frozen squid,
brine shrimp, bloodworms etc has acquired a taste for Anthias. They were
easy targets while they were pre-occupied and he's managed to savagely nail
all three in the last week. He has not had any interest in his frozen food,
and the concern I have is that he is ruined from eating prepared food ever
again. I didn't feed him for a few days and he still doesn't want the
frozen squid. It may be too early to tell since he's just consumed probably
double his body weight in the last week in "Anthias". He's also eaten a
sleeping goby and a few damsels, but the latest rash of attacks is getting
after my tank favorites. I'm concerned he'll get my imperator angel - still
a juvenile about 3".
<Might>
Any tips you can give on feeding habits. We really
like the lobster in the tank. He's otherwise been doing well and he's quite
entertaining. But his new favorite dish is out of my budget if he continues.
Any general advice you could give me would be greatly appreciated. Like the
Anthias, there isn't too much info I was able to find on the lobster
situation.
Thanks in advance for your help.
Respectfully,
Susanne Dvorak
<Wish I could proffer a better prospectus, but the Lobster should go... unless
you want to risk any, all fishes it can get its claws on... at night, when most
fishes are sleeping/resting on the bottom, w/in rockwork... Bob Fenner>
Lobster & Tang 7/10/05
Hi There!
<Hello>
I've had my saltwater aquarium setup for 4 months now. I have been noticing
peculiar behavior between my purple lobster (4") and my yellow tang (3"). The
lobster sits in between live rock 99% of the time and just seems to watch the
tank all day.
<This is what they do... nocturnal animals>
I noticed my yellow tang hovering near the lobster den often. I looked closer
and saw what looked like the lobster massaging the tang with its tentacles and
moving its claws up and down along the tang's side like he's scratching his
back. What kind of behavior is this?
<Some sort of interaction... perhaps the tang is seeking cleaning... the lobster
trying the tang out as a potential food item>
The lobster is absolutely non-aggressive and has never gone after any of my
fish. I just thought it was strange that the tang just loves to go near the
lobster all of the time. I though he might have been teasing the lobster at
first, but the lobster doesn't move away. Any thoughts? The tang is probably the
most friendly fish in the tank. It seems to like to swim alongside the other
fish and other fish like to be near it. Thanks! Heather
<In the wild, Yellow Tangs are frequent visitors to shrimp attended cleaning
stations... mainly Stenopus hispidus in Hawai'i... the Lobster may well come
from this part of the world. Interesting. Bob Fenner>
- Lobster Cleaning -
WWM Crew,
Your website has been most helpful over the years! I have a lobster that is
at least a decade old named Boris. <Amazing... and good for you and Boris.>
He is from the cold water in the pacific. Unfortunately, he has a black
fungus that is growing on one of his tentacles. Is this condition a problem?
<Probably and artifact of his age - I've noticed that specimens that get to
live long lives (like those in public aquariums) do acquire things like this
on various parts of their bodies. Is typically due to lack of cleaners in
their system, and also their sedentary and often isolated lives. Does it not
go away when he molts?> If it is, is the best way to treat it to remove the
affected tentacle or is there a way to do so using chemical treatments?
<Actually, if Boris would tolerate it, I'd go after it with a tooth brush.>
I would prefer the chemical treatments, as Boris weighs over 35 pounds and
he is quite difficult to handle. <I can imagine. I'd just try to scrub that
stuff off... do what a cleaner fish or shrimp would do in the wild. But all
in all, probably not something to be ultra concerned about...>
Thank you very much!
Marshall
<Cheers, and many long years to Boris. J -->
Diet For A Purple Lobster - 06/10/2005
Hello,
<Ahoy thar, matey!>
I would like to know what is the correct diet for the Purple Lobster,
Enoplometopus sp. I am currently feeding shrimp and seems to like it, is there
anything else I could feed it? Please recommend.
<Most likely Enoplometopus daumi. A shy little bugger, but beautiful! You can
offer him meaty foods, especially human-consumption clam, shrimp, squid,
scallops.... Freeze these foods before using to prevent spreading any
pathogens, then just thaw a piece when you feed him.>
Thank You
<You bet. Wishing you and your pretty purple pincered pal well, -Sabrina> - Getting Rid of a Purple Lobster -
Hello,
I have a purple reef lobster and, until two weeks ago, all was well in my 110
reef tank. Then all my fish disappeared, except two percula clowns. Corals are
all fine. I've seen some of the fish bodies in the tank, which leads me to
believe it may not be the lobster. <Uhh... don't sell that lobster short. There
are most certainly predators and in my own experience they do kill and leave the
corpses for later on.> My water tests within standard reef parameters. After
reading your FAQ's on purple lobsters, I've decided to remove the lobster just
to be cautious. What methods do you recommend? <Stick it with a skewer? You
could prepare a trap but really these are large enough to be caught by hand and
though you might get a small pinch, they can't really do you any damage. Would
just use something as a prod and back it into a corner where you can grab it.>
Thanks,
Susan
<Cheers, J -- > Commercial lobster tank
I have been in the lobster retail business for four years now, using a
closed system with bio, refrig., filtration, oxygen etc.
<Mmm, you've come to the right place... Our companies used to design/engineer,
manufacture and maintain such systems>
In this industry it is very competitive, so information is often not disclosed
from other retailers. I do understand what I need to do to maintain my system.
There are times though, that I am very frustrated with my nitrite levels. I
never have a problem with Ammonia. When I load in 300 lbs of lobster into
my 750 gal. tank system, the ammonia cycles out within hours. Is there any way
to speed up the nitrite process.
<Mmm, yes... a few ways that I'll mention below>
Changing out 30 percent of the water does not drop the nitrite level at all.
Will frequent 50% water changes hurt my bio, since this seems to be the only
thing I can do, which in the long run is very costly.
<Yes... lots of water, time...>
There is a detox (the answer from my tank installer to make me spend!) for large
loads but ammonia is not my problem. The Detox seems to make the nitrite levels
go uncontrollably high, even WITH water changes.
Could there be something wrong with my bio, when even with 50% water changes, it
doesn't even effect the level going down. These high nitrite levels make the
lobsters very sluggish. Am I also hurting the lobsters with frequent water
changes (I make my own salt water with synthetic salt) by taking out the natural
elements they bring to the tank or is it really the 3-5 days in the high nitrite
levels that causes the higher mortality.
Thank you. The Lobster Lady
<Do look into the use of fluidized bed filters, filtration... the use of
BioSpira (Marineland product)... that they'll hopefully sell you in bulk. Do you
manipulate specific gravity at all? Keeping this a little low is advised (will
add weight to the lobsters...) but not changing it much (0.001 spg) in a day...
Do you use Baking Soda, Sodium Bicarbonate to maintain pH, alkalinity or some
other (commercial) product for same? Let's chat re. Bob Fenner>
Re: Lobster Lady
Dear Bob,
<LL>
Your response to my letter has certainly sparked my wheels turning in my head. I love the challenge.
<Good>
This morning I went out to check the tank which at the moment only has 8 lobsters in it after selling 400 lbs in the last two weeks. The nitrite levels are still very high. between 2.0-5.0. I only occasionally check the pH. I use well water. I am no expert on pH...
<You should become so... if your pH is high/er, the nitrite (and ammonia) will be MUCH more toxic. Depressing same may save you a bunch of dead bugs>
since my tank installer said "Don't worry about it, worry about your ammonia". It seems the occasional times I check the pH it seems in the lower 7.0 range , but since you suggested it today I checked to find it at a higher 8.2. Is a good range (8.0) for lobsters?
<Yes>
But usually it is lower. I'm learning something new. Where do I need to keep the PH to help the nitrite process faster?
<Mmm, steady is more important than a given point, but near 8.0 is good>
My well water is hard water. Is this a factor?
<Oh yes>
There is dolomite, carbon and limestone in the bio. I was told to add limestone when they realized they didn't bring enough dolomite when they installed my tank. Would the limestone be affecting the pH or bio growth.
<Assuredly yes... dolomite is however more soluble...>
In reassurance, can I say that my bio is effective if I don't have an ammonia problem?
<Mmm, yes, at least the first part... conversion of ammonia to nitrite>
There are times when I feel that it is all guessing game. How do I know there is an affective bio?
<There are a few ways... indirectly by measuring as you have is one>
My bio looks very clean! My stones are still white with just a dusting of green after 4 years. Could the high levels of nitrite be due to the increase of volume due to mothers day, and the higher load level than usual after a slower winter.
<Yes... load, stress, feeding history, temperature... all factors. The use of a fluidized bed system will likely be able to "speed up" nitrification to account for these changes>
Is it good to let the nitrite levels stay high since there aren't many lobsters in there right now....does this increase the effectiveness of the bio for future loads?
<Mmm, much to say... not good for nitrite or ammonia to exceed about 1.0 ppm... among other things this forestalls the complete establishment of cycling...>
Is it bad for the bio that after having 300-400 lbs in the tank it will go 4-5 days with only 2-10 lobsters in it?
<No... this is enough "food" for the microbes involved>
The tank temperature is 38-40 degrees. I have a eSHa Marinomat hydrometer, which reads 1.020 correctly since it is temperature effective. The cheaper other two hydrometers I have read 1.023 -1.024 on the specific gravity, so I consider the Marinomat more correct since it take temp into consideration. If I trust the eSHa Marinomat, should I keep it higher than 1.020?
<I would not. NOT. Better for several good reasons to leave about where you are... and again, to not let vacillate much. Pre-mix, store new water...>
I cannot believe I have found help on the internet. I will research the BioSpira. I don't know what it is yet, so I need to see how it works in my style system.
<Days, years back we used modified microbes (Bacillus subtilis) for this purpose... to goose the forward reaction series of nitrification... in crustacean, mollusk holding systems>
I have a two tiered tank. The upper tank is filled 1 1/2' deep with the bio, and a
Plexiglas with holes lying directly on top of the bio media. The bottom tank is all water and about 2' deep. The pump pulls the water through three towers with filter cartridges and a refrigeration unit outside the building. I change the filter cartridges once a week.
<What a lot of work these are... and a bazillion dollars in cartridges and electricity to push water through them over the years... DO look into the FB technology... will save you tremendously... as the activity there will greatly eliminate solids>
I store lobsters in the bottom and a portion of lobsters on top of the Plexiglas over the bio media. The lobsters moving around does move away debris that forms under the
Plexiglas, on top of the bio media. I've always wondered if this hurts the bio. The water falling from the top tank into the bottom tank on over flow gives the tank oxygen. The tank pumps 90 gal. per minute. Do I sound OK?
<Mmm, yes... if this is all working for you. A few modifications, maybe having a look/see re your pump/s, pumping... there may be some significant savings here>
I purchased the system from a well known tank installer on the Maine coastline. He's an old timer, so he hates the biology of it.
Thanks for your help. Laura
<We are biology my friend. Bob Fenner>
Reef Lobster
Hi there. Let me be the next person to say that WWM is an amazing resource
and I sincerely appreciate you guys, the experts in your fields, taking the time
to educate us lesser mortals!
I have several tanks, saltwater and fresh, and like most of such persuasion am
an incurable tinkerer. I'm currently attempting to maintain, in addition to the
large central display tanks, a series of small species tanks featuring specific
biotopes that are quasi-'natural' or at least able to support
less-than-fully-reef-safe individuals. My latest project centers around an
Enoplometopus daumi that, per your advice, is not suitable for any of my reef
tanks. I've dedicated a 15g tank to this 2" beauty, complete with a LR/LS
combination suitable to that size tank. BUT, I'd like to expand the livestock at
least a bit. Can you recommend ANY tankmates, preferably fish, that could be
happy in such a small tank and be somewhat less likely to be expensive food for
the lobster? How about a mantis -- will they just smack each other around the
tank? Ideally, I'd like to stock a few cheap fish, damsels or the like, just for
motion and color during the day, and would be willing to do so even with some
risk if the losses were rare. Your input would be greatly appreciated. <Hal,
according to my references the reef lobster is suppose to be reef safe although
harmful to fish as you know. They do like a thick gravel bed for burrowing
along with rocks for hiding places. They are very aggressive toward others of
their kind so two of them is out of the question. You will also need to add
iodine for these critters as it helps for proper molting. As far as fish, I
would probably put something in there like Chromis since they prefer the upper
area of the tank. Good luck with the species tank. James (Salty Dog)>
Kind regards,
Hal
Rearing Reef Lobsters 1/22/04
I am a great fan of your site and would like to join other forum readers in thanking you for the outstanding service you provide. I am writing because I recently acquired an Enoplometopus daumi (purple reef lobster) that is "pregnant"--numerous orange eggs are attached to the underside of her tail. I would like to take a shot at hatching and rearing the young. Are there any prospects for success in a captive system? Are there environmental parameters other than the obvious (good water quality, etc.)
that I could provide which would improve the chances of survival for the young Enoplometopus daumii? Thanks so much, Chris
<I'm not aware of a specific spawning report on this genus, but let me suggest you dig into some google.com
searches for fisheries information on lobsters (be sure to run down the citations and bibliographical refs you see on the pages)... and perhaps consider buying the neat little hobby book, "How to train and raise peppermint shrimp" by Kirkendall (see Amazon.com) for perspective on rearing Arthropod kin. Best of luck and life. Anthony>
And Now For Our Disappearing Lobster Act.... 12/13/2004
I recently introduced a purple lobster into a 75 gallon tank with about 45
lbs of live rock. I have not seen him since the first day. I've read they are
shy and nocturnal but is it normal I wouldn't have seen anything from him for 4
days?
<This strikes me as a normal thing - I wouldn't be too worried as of yet.>
Maybe he's crawled into the rock and died?
<A possibility, indeed, but I think it likelier that the lobster has just found
a comfy place to hide out while he gets his bearings in his new place. Sneak
out for a look at the tank well after dark. Bring a dim flashlight with some
red cellophane taped over it (hey, that's one thing Christmas merchandising is
GREAT for, red cellophane!!). Drop in a bit of shrimp or other meaty food,
somewhere near the rockwork. Wait. With all due luck, once he's settled in
some, you'll catch a glimpse of him, maybe get to see him eat. If so, you'll
probably be able to determine where in the rock he spends most of his
time. After a while, you'll probably be able to coax him out any time of day
with a bit of food (shrimp, fish, scallop, whatever) in front of his lair.>
Should I disrupt the fish by moving all of the rock around to look for him (to
make sure he's not dead)?
<I would not do this. I don't believe it's necessary. Do be testing for
ammonia, nitrite, and nitrate, just in case.>
Thanks for your help.
<Any time. Wishing you and your lobster pal well, -Sabrina>
- Keeping the Purple Lobster at Bay -
Hello Crew,
I recently had to fight a bout of ich and removed all my fish to quarantine and
let the main tank go fallow for 35 days. About two days after I started the
fallow period I purchased a small Purple Reef Lobster and added him to the main
tank. Here is the description of my setup.
1) 20 gallon main display
2) 20lbs live rock,
3) 1 lps (Goniopora lobata?),
4) 3 mushrooms (Rhodactis spp?)
5) Lots of amphipod / copepods
6) 7 small to medium Hermit Crabs
7) 10 Turbo snails
8) 1 colony of yellow polyps (Zoanthus sociatus?),
9) 10 Gallon refugium (lots of algae including natural algae growth from live
rock)
10) 10 gallon sump all share water via pumps and overflow
11) 2 Fluval 204 canister filters
After the 35 day period I reintroduced the five damsels into the main tank and
overnight one of the damsels disappeared. Two days later I found his carcass
floating at the top missing the head and badly chewed up. After reading the
FAQ's on lobsters I come to find out they are/can be predatory not just
scavengers. I plan to create a new setup with a 75 gallon main tank, my 10
gallon refugium and a 10 gallon species tank for the lobster. Until I do this,
what is the best course of action for keeping the lobster fed, fat and sleepy so
he does not hunt down and kill the rest of my damsels when the lights go out?
<Keep it in a different tank - I don't trust lobsters as far as I can throw
them... unless they are the edible type, and then are best with drawn butter.>
Regards
Manny
<Cheers, J -- >
Commercial lobster store 2/8/04
Thank you Anthony,
<cheers>
Another question if I may. Subject, oxygen content in the water. What is the
best way to get the water aerated, is a venturi (assuming there is enough
pressure) adequate to aerate for 1-2000lbs of lobster?
<hmmm... likely can be of use, but venturis are not without their serviceable
needs/challenges. Nothing beats the economy and reliability of a blower (air)
running open rigid lines (3/8" or 1/4" tubing) ala aquaculture style.
With a range of 1 to 2000 lbs of lobsters, too... you will want/need to finesse
all aspects of filtration, including O2 saturation, with regular testing. That
is the thing you should obey>
We have a noisy pump blowing bubbles at present, several people tell me it is
doing very little, other than giving us a headache.
<quite the contrary... and if you will take the tie to run an O2 test you
will see. Air driven diffusers placed at the bottom of the vessel will usually
outperform venturis. DO see if you can find such references to this in the
fisheries data>>
Questions never dry up from here I'm afraid, too
many damn experts opinions seem to differ! Cameron
<I suspect you need to consult real experts in the fisheries field my
friend... and not pet fish folks. There is hard data/science there for husbandry
of livestock in large qtys that you have/will have. Anthony>
Glass or acrylic for commercial lobster store
Good evening crew.
<good evening>
We `are adding 7 tanks to our saltwater system. 4m long, 1m wide and 600 to 900
high. We will have lobster and shellfish in plastic cases. Water temp,
13oCelsius (Fahrenheit?..) Air conditioning in the room at 21o Celsius. We have
been given mixed advice about using glass or acrylic. Is glass strong enough,
will it crack, will it have condensation running down it. Your thoughts please..
Regards, Cameron
<lets play it safe here and consult the specs sheet for a glass and acrylic
manufacturer. Glass can easily do the job (has done so for many years in public
aquaria easily up to 1000 gallons). But it is a poor insulator and sweats
terribly when holding chilled water. Either way, seek tolerances of
"deflection" (ability of pane to bow without breaking) to confirm that
your expected capture of the panes is consistent with mfg
recommendations/expectations. Anthony>
Lobster sales Q's
Hey Guys,
<Hello Jon>
I'm a newbie business guy thinking about selling Lobster (a lot). I
have a two-part question. How long can I expect them to live in my
tanks and how do I set one up? (type two buy.. etc)
<Refrigerated they should last for several days to a couple of weeks...
better to sell sooner, FIFO... as they lose weight... and are sold by such.
Set-up as in systems? Business? If you don't know this yet... time to work for
someone, visit about in the trade for a while>
Thanks in advance for any help you can give me!
Jon
<Bob Fenner, remembering Jon Handrus of Calif. Crustacean>
Lobster sales Q's
Hello Again,
Thanks for your response. I guess to be more specific, how long do
you think I can keep them healthy by recreating there natural environment?
Jon
<Indefinitely. That is, by recreating these (or other organisms) natural
environments you can keep them for about their natural lifespans... The vast
majority of folks who re-sell the homarids and palinurids as human food keep
them on hand for the shortest time possible... for obvious reasons (turnover,
profitability...). Hence, days... Bob Fenner>
Re: Lobster sales Q's
Thank you again for responding. Sorry if I upset or offended you
in anyway. Your answers although informative they were very abrasive.
Take care
<Mmm, no offense taken, or intended... I still don't know what (to a point)
you are/were "looking for"... If it's your intention to work in, or
engage yourself as the owner of a business selling live lobsters, I encourage
you to work in the field (for someone else) for a while... You obviously do NOT
know enough to "just start" such an enterprise... IF you simply don't
know enough to answer the simple questions re how long these animals can be kept
in captivity, or how this is done... this statement re your preparedness is even
more negative. The "aquatic source protein" business is very
competitive. IF I have entirely missed what you are trying to find, so sorry re.
Good luck to you. Bob Fenner>
Lobsters & corals? Oh, my! 3/3/03
last summer I purchased a medium sized white branching type coral and placed
it on the bottom of my tank near where the purple & red lobster has taken up
residence.
<ahhh... OK>
It did well until one day part of it's branches were ragged and wilted. Over
the next week or so it deteriorated and piece by piece until it was gone.
<indeed>
In the fall I ordered a variety of small corals, one of which was a branched
white soft coral with just a tinge of green.
<hmm... please do take the time to research the needs of these corals beyond
their proper names before you buy them>
Over the course of a few months it has more than tripled in size and became a
nice vivid green. Two days ago I noticed that it had shrunk down, as
it does at night, but more so and did not stretch out during the day. Now
I just got home from work and here it is, mostly gone. It also had
been placed buy the lobster's lair. In fact it is pulled under the
rocks , probably 4" from where it started.
<no doubt>
I didn't think that lobsters ate corals. Am I pointing the finger at
the wrong suspect?
<Oh, heavens no! The only people that will tell you lobsters are reef-safe
are the folks that sell them ;) Small coral lobsters like the individual of
which you speak (almost certainly an Enoplometopus species) are categorically
carnivorous scavengers. They do not systematically seek to wipe out a reef
aquarium on arrival... but will nibble on most any sessile invertebrate that
they can get their claws on when the mood strikes them. Under no circumstance is
that cool little lobster "reef-safe">
Nancy D
By the way, so far the anemone and the corals are doing fine together.
<I am truly disappointed that it is even attempted (and for how often it is
done by aquarists)>
I did at first suspect it had stung the coral as it had me when I got my arm too
close, but really don't think that is the case. It would be too far a
reach and corals closer to it are doing fine.
<you have my sad assurance that this anemone, with a lifespan of decades,
will not live to see but a couple years at best most likely if it is forced to
live in a crowd of corals. It is unnatural for most anemones (few live among the
other cnidarians on the reef proper)... and they only appear to "do
well" in mixed company for a matter of mere months. My advice is to give it
a proper tank without other stinging corals/anemones. Best regards, Anthony>
Compatibility issues 3/4/03
Oh my, have you given me something to ponder. I know I can give
Mr. Lobster to my co-worker who has a fish only tank.
<they really are great scavengers withy big enough fish... its a shame they
are rather shy for how beautiful they are>
(I already gave her a star fish that I found out was not coral friendly who now
eats out of her hand). The anemone is a different story as she
doesn't have adequate lighting for it to
live. I'll check around.
<good to hear, my friend>
I know a couple other folks who might be able to give it a good
home. I hate to give away the Tomato clown as I have had him
for nearly 5 years but he and the anemone are 'best friends' and I would hate to
break up the pair. Ah, the social complications we run into!
<indeed... the complex relationships on a reef are many... therein lies the
rub and attraction :) >
Thanks for the advice, Nancy
<kind regards, Anthony>
Re: reef lobster
hello! this is my first time writing to this page. i currently have a Daum's
Reef Lobster (sold to me as a Purple Reef Lobster) living in my 55 gallon
soon-to-be-reef tank...he's quite shy and only comes out at night...actually, i
saw him for the first time in 2 months last night! anyways, would it be safe to
add another one or will they fight?
<Definitely fight in this size system>
i have a friend who would like to give me her lobster...they are of similar size
and even though they're quite reclusive, i would love to have another....i
appreciate any information you could give me. thank you very much!!!
~Lisa
<Thank you for writing. I would not take this risk. Bob Fenner>
Re: ammonia in lobster
when lobster have high levels of ammonia in blood what is the long term
effect or how long will it take to purge from blood
<... there are known physiological effects... on the blood chemistry,
capacity to utilize foods... behavior. Can be purged within minutes to
hours...>
what is high levels
we use sea water and discharge about 10000 gal pr hr looking for help
thank you Percy
<Need to start further back here... Tell me/us about your culture facility...
are you recirculating water? Manipulating pH? Using a standard feed? What
species, life stages are you dealing in? Bob Fenner>
Ammonia in lobster
we are in the offshore lobster we have a tank that hold 45000 lbs or 13000
gal water we pump in discharge over the side we use dry air
pump to agitate the water sea temp 50 we fish about four
days the size about one to six lbs we have had crab in tank Percy
<Have you experienced losses from metabolites? (like ammonia). If you can, do
monitor the ammonia, and do your best to increase water flow over the animals if
it approaches 1.0 ppm. Bob Fenner>
Lobster in an Aggressive Tank
Bob, enjoy the info you graciously provide...
<Steven Pro in today.>
I have an 80 gallon tank with the following livestock: zebra moray 12", snowflake moray 12",
Blueline grouper 3-4",
Niger trigger 3-4", and a pink tailed trigger 4-5". All fish doing great, I have a
Venturi type protein skimmer (SeaClone) and emperor wet dry as well as a 400 gph powerhead.
My question, I am looking to add a purple reef lobster to clear up detritus on floor, (have just a slight skin of crushed coral) I had a nice red legged hermit, but shortly after I introduced the zebra moray and blue line grouper, the hermit, which had survived more than a year and a half, went
AWOL.
I understand that purple reef lobsters can be predatory, but since I
have a "tough tank", I am wondering if he would pose any threat to my
fish, and just as important, will my fish make short work of him?
<You are right on the second part, someone will eat the lobster. -Steven Pro>
Lobster under the Christmas Tree (Building a Lobster Tank)
Hi,
<<JasonC here, standing in for Bob who's away diving.>>
My husband has his heart set on a lobster tank for X-mas and I have been searching on what to get. The size tank I can have is 60 X 18. I wanted to know what I need to buy and where can I buy it? We
don't know anything about it and he wants this as his new hobby.
Diane DelleCave
<<Well, there are quite a few lobsters out there, and I'm going to guess by the size of the tank.. do you mean the lobsters you can eat or the lobsters the size of crayfish? Ok, you could eat those too, but I doubt you'll ever see a plate of them. Anyway, that aside there are a bunch of different lobsters, and another fascinating invertebrate called a
Stomatopod - the Mantis Shrimp. A "lobster tank" is a "species tank" - you wouldn't really be able to keep anything else in there that wouldn't fall prey to the main attraction at some point. In short, they have to be kept by themselves, anything else is probably food. So... that's the reason you might also want to look at a mantis shrimp - they are very cool and pretty too, but smart and fierce predators. You can read up on both here:
Lobsters: http://www.wetwebmedia.com/lobsters.htm
Mantis Shrimp: http://www.wetwebmedia.com/mantisshrimp.htm
For basic tank setup, you can start reading at the following link, but you should also check your yellow pages for a Local Fish Store who might be able to help you procure the tank and various equipment you will be needing.
Tank Setup: http://www.wetwebmedia.com/marineSetUp.htm
The larger lobsters require a chilled setup and you can read up on cool water marine.
Cool Water Marine: http://www.wetwebmedia.com/cold.htm
So... you are just beginning. Do look/read before you leap - and then look and read again before you leap. Move slowly and you will get the best results long term. If you are building a dream system, you may not have a lobster under the Christmas Tree - if you needed a custom tank, for instance. Speaking of which, you should also browse the links section for tank manufacturers and various online e-tailers that are also a good equipment source.
Links: http://www.wetwebmedia.com/links.htm
Cheers, J -- >>
Lobster Question
Hi my name is Mike,
<Cheers, Mike... Anthony Calfo>
and I have a question about a lobster I have recently acquired. It is a blue spiny lobster, and I like him a lot.
<very cool creature>
I have noticed recently that he keeps his tail curled up under him for most of the time, especially during the day time. At night, when the lights are off, the tail stays behind him, flat on the ground like normal.
<a perfectly natural posture for this animal>
I have another red spiny lobster too, I don't know if that factors into the equation or not.
<not at all>
I was thinking that the blue lobster may have his tail up underneath him to make himself feel safer, as he was added only a couple of days ago. Well, if you could email me back, and tell me what you think, that would be great. Thank you for you time. mike
<no worries, my friend... just feed them a diverse menu of foods and watch them grow. Anthony>
Red Lobster - Enoplometopus species
Hey there!
<whaaaaasuup? Anthony Calfo here answering WWM queries, staring at blue actinic lights with cool shades on and whistling Moody Blues tunes>
You're FAMOUS at Old Town Aquarium.
<Yowsa! That's truly a pleasure to hear since I recently gave up hope on being rich or handsome!>
When I told one of the guys that you actually wrote me e-mail he just about fainted.
<I'm sure I need more friends that are so easily impressed as that gent <smile>>
Anyway, if you'd be so kind ... please tell me if I can keep a "red lobster" in my 25 gal. reef tank.
<Nope...and thanks for asking...next question! Ha! Actually, not everyone admires sexy lobsters as you an I do (and I do seriously). However, they are truly and consistently destructive in reef aquaria>
Tomorrow is the day that I go to pick up my first round of
inverts -- hermits, shrimp, star fish, etc. Recently I've developed an
interest in keeping a lobster but only if it is compatible with the others that I plan to keep. Any information that you could provide would be great ... I was looking on marinedepotlive.com and they state that this specific
<safe in the sense that reef invertebrates are likely to be safe form being eaten... however, all best are off on the fish... and I assume you were not going to set up a fishless system? Predation is not a question of if, but when with lobsters. The other concern is the bulldozing activities of Lobsters with LPS corals that may be hardy with regard for water quality, but alas with not take
repetitive falls/injury from the frisky crustaceans>
lobster is "reef safe," but I'd just like to make sure. After all, you're not the one trying to sell it to me!!!
<very wise thinking, bro. Which reminds me... I should give Old Towne Aquarium a call to see if they are stocking my book <wink>.>
Thanks Robert, Steve Pro, Anthony Calfo, etc. You are all great and very helpful. Ari Klein
<thank you very kindly... and I will see you at the Midwest Marine Conference in Ann Arbor Michigan this March, eh? How about 2003 at the Chicagoland IMAC conference? Can you tell that I'm just a junkie for reef-nerd conferences? 10 years running <G>. Anthony
Calfo>
Lobsters in Galveston?
Hello Dr. Fenner,
I have written you before about my excursions to the muddy and murky waters of Galveston Bay.
<Yes, I recall>
Today, while catching ghost shrimp under the causeway (for my very hungry flounders &
Searobins) I happened upon 2 critters that look a whole lot like lobsters and not crayfish. The largest one (the other is too small to tell), about 11/2", is greenish grey with bands all down his tail and one very large claw & one small pincher. It also has 2 sets of antennae (whatever they are called), 2 out to the sides and 2 in front. After just a short while in my tank this crustacean started moving pebbles around to build a shelter. From what I could read, it looks to be a lobster, but a friend of mine insists that they can't live in Galveston. Who wins this bet?
<Mmm, well, there are lobsters known from the area... but don't think this is one of them. A large claw (you should only have spiny lobsters, palinurids, there... but there are snapping shrimps (Alpheids), other crustaceans that fit the bill/description. Bob Fenner>
Thank you for your time,
sincerely,
Steve Tilotta
Re: lobsters in Galveston?
Once again I lost a bet, but gained some knowledge. Indeed you were correct,
it is a snapping shrimp. I was surprised to see that they sell for $18 on
one site.
<What's next? Folks paying big bongo bucks for fleas, ticks, cockroaches?>
Maybe I can make a few trades with the pet stores I frequent.
Thank you again Robert for your assistance.
Steve
<You're welcome my friend. Be chatting. Bob Fenner>
fisheries supplies?
Hey, Bob...
First of all... a very big thank you for the apparently kind referral that you gave Edwin at All Seas about my book.
<Anthony, you, your work is/was simply presented as you/it are>
He is placing a nice first order. I must have been taking my medication when I wrote some of the passages in the book to earn a favorable review from you <smile>.
<Mmm, possibly>
Secondly, a local aquarium service fellow has been asked by a local seafood market to propose filtration for a 3500-4000 gallon lobster system. He is already aware of Marineland systems and has a lot of past experience with them... but wants to look elsewhere. Can you recommend an aquaculture or fisheries supplier that he might look into for commercial filtration components?
<Yes, have him contact Robert or Chris Krechter at RK2, 760-746-7400, mention my name if he'd like>
Aquacenter is the only one off of the top of my head that I could recall. I guess I remember Fritz and Argent working the field but don't even know if they are still in that business. Any good guys you can point him to?
<A few others, try the Krechters, RK2 first. Know what they're doing (some of their gear you've seen in the Pittsburgh Zoo/Quarium re-do). Nice folks too>
I hope you've had a very peaceful holiday.
<And you my friend. Bob Fenner>
Kind regards,
Anthony
Lobster in a reef ?
Hi there Bob,
I have a 180g tank with 5 tangs ( Z. desjardinii, Z. xanthurum, Naso
lituratus, A. leucosternon, a. Sohal ( the "king" and my favorite ) ), a
pair of Premnas biaculeatus ( the male is very small, 1" ) ,Valenciennea,
and a Labroides dimidiatus ( fat and 1 year old in my tank ; eats
everything, from Artemia to flakes, and its crazy about Nori :) ).
<Great>
As far as invertebrates goes, I have soft corals, a Hydnophora, two big
big big brain corals ( 10" diameter each ) .
<Have pix of one over 25 feet in diameter in Tobago!>
I also have several Astreas
snails. No hermits. I own also a Entacmaea Quadricolor for 5 months and
in great shape..
<Okay>
Anyway, I got several questions for you :
* My LFS have a reef lobster, a Enoplometopus daumi or debelius.. Cant
figure which one, but its safe to add to my reef ?
<Hmm, "not really"... they can, will pick at most everything if hungry>
* I Tried 3 times to have Lysmata shrimps in my tank.. No luck, they
settle in fine, and then in 1 or 3 months, they vanished.. Why ? Naso
eats them ( he's big, 6 to 8 " ) ? Anemone ?
<Maybe... or perhaps you have a lurking Mantis, alpheid shrimp/s>
* I own a red seastar.. Can I add a blue laevigata ?
<Yes>
* I want to add some angelfish, Genicanthus species.. If I add 4
females and 1 male, will they school ?
<This tank's actually a bit small for this grouping... maybe one male and a single female>
* My light system is 3x150w MH, 9x9w actinics and 2x36w actinics... Can
I keep a Nephthea coral ? Are they hard to keep ?
<See the site: http://wetwebmedia.com/soft.htm>
* I've heard that mandarin fish requires sufficient Amphipods and
copepods.. I do believe that I have them.. Even so, I've also heard that
they are easy prey for anemones ? Its that true ? Cant I keep them
because of my Entacmaea ?
<With the mix you have I would worry the Mandarin would not be able to compete for food, am concerned about the possible "lurker" and yes to the danger from the Entacmaea.>
Thanks and regards,
Goncalo Proenca
<Be chatting my friend. Bob Fenner>
Lobster addition?
Dr. Bob,
<Howdy>
The manager at my local fish dealer suggested a Spiny Blue Lobster as a
colorful scavenger for a large, moderately aggressive fish tank (500
gallons, Bonnethead, yellow tang, 2² Fijian Blue Devils, angel fish) with a
fine sand substrate. From what I¹ve read in a variety of sources, opinions
regarding this species run from Reef Friendly¹ to killer.
<More toward the latter... in your list, do you mean "Bonnethead" as in a shark?>
Your descriptions
on species that I¹m familiar with tend to be completely accurate with
behaviors I observe, so I trust your opinion more. As an omnivore, will this
creature eat detritus as readily as meaty foods?
<No to the detritus... an eater upper of meaty food items, including slow tankmates>
His central body mass is
approx. 5² now and he¹s housed with a number of small fish, but when he¹s 8² - 10² will he put the omni¹ in omnivore?
<Indeed, even sooner>
Even if he¹s totally safe with my
current inhabitants, if I buy him and have to supplement his diet with
additional meaty foods will the net result be more bio load? What¹s the
recommended feeding regimen?
<Great excreters of ammonia, other wastes... Feed two, three times a week... with a tool down to its area toward "lights out"...>
My current filtration system is overkill for the tank (wet/dry rated for a
1,000+ gallons, canister filters rated for 300 gallons, skimmer/turf
scrubber rated for 300 gallons) and I have respectable water turnover 3.8
times/hour.
<I wouldn't call this "overkill" for a 500 gallon system with what you list in it... e.g., I would increase the circulation by two, three times.>
But I would like to keep the sand surface maintained, and a
lobster would be more interesting than a host of hermits. Also read your
scavenger section on found a supplier for farm raised queen conchs. Would
the lobster and conchs work well in tandem? Any other suggestions for
general grounds maintenance?
<No... the Lobster will/would eat the shellfish. Look into Goatfish here... Bob Fenner>
As always, thanks for your advise!
J.D. Hill
Pincerless Lobster
A friend of mine recently decided to take down his 55gal tank. He sold me about 25 lbs.
Fiji live rock, wet dry filter, skimmer, all the pumps, UV sterilizer, coral beauty, starfish, and a lobster for about $200. What a deal that I got!!!!! I can not seen to find any information on the lobster and starfish anywhere on the net. The starfish is blue, looks like a
serpent star, round center with long legs, very prickly. He is fairly large. What do you know about this guy? Second, the lobster I have never seen one like this before!!! He is bright orange and purple, and about 2 1/2-3 inches. He was real beast to catch. He ended up releasing both his front
pinchers to get away, which I was told will eventually grow back in about 4 weeks. What type of lobster is this, and what do you know about him?
Thanks for the help Bob, Patrick
<
The Serpent could, may well be, one of several species... most innocuous, but at least one known to be a fish eater (when they're sleeping)... The Lobster sounds like an
Enoplometopus... a Hawaiian... and do get to some 6-8 inches... and are as opportunistic as other lobsters... Take a look further on the Net, a large library... there are many references to these animals... Invest in volumes 2 and 3 of Baensch's Atlases with your big savings?
Bob Fenner>
Lobsters for Reefs?
Hi. I'd like to know if lobsters are appropriate animals in a reef tank.
Thank you.
>>
Hmmm, not really. Let's see, how to put this... There are some smaller species that will kind of go okay if/when put in as "babies" but they all get big, rambunctious and destructive ultimately... trying to eat most any type of sessile animal... If I absolutely had to have one I'd look into the genus Enoplometopus...
Bob Fenner | |
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