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| FAQs about Sea Slugs, the Opisthobranchs,
Behavior
Related Articles: Sea Slugs, Nudibranchs,
Related FAQs: Seaslugs 1,
Seaslugs 2, & FAQs on:
Seaslug Identification, Seaslug
Compatibility, Seaslug Selection,
Seaslug Systems, Seaslug Feeding,
Seaslug Disease,
Seaslug Reproduction, & Marine Snails 1, Marine
Snails 2, Marine
Snails 3, Nudibranchs,
Nudibranchs 2,
Nudibranch Identification,
Nudibranch Behavior,
Nudibranch Compatibility, Nudibranch Selection,
Nudibranch Systems,
Nudibranch Feeding, Nudibranch Disease,
Nudibranch Reproduction,
Berghia Nudibranchs, Snail ID 1, Snail
ID 2, Snail ID 3,
Take your time... they "do" a bunch.
Chromodoris magnifica.
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Spitting Sea Slugs 1/21/04
Hello Chaps and thanks for a wonderful website.
<Hello from the left side of the pond! Glad you enjoy WWM.>
I have a 40 gallon tank with loads of Fiji live rock, two true tank bred clowns,
two green Chromis and a tank bred flame angel. The tank has been running for a
few months with no problems, thanks to lots of reading of your site. I have a
slight concern over what seems to be a group of sea slugs in my tank. They
generally appear after the lights go out . I have seen about three of them
together so I assume there must be more. I noticed the other night that they
occasionally spit some sort of brown fluid. They are about 1.5 cm
long and dark brown. Do you have any idea what these sitting creatures are and
should I remove them? They don't seem to spit at anything in particular but your
advise would be greatly valued.
<A picture is worth a thousand words or more. ID is difficult
without one. If they are surviving in your tank, they are getting
food. Many are herbivorous, some are carnivorous. I don't
know what the "spitting" is, but it is probably just excrement, but
could be spawning material. There are some internet sited dedicated
to sea slugs and Nudibranchs. Perhaps you can find a match there. Best
Regards! Adam>
Thanks again. DavidSee here... Sea hare 5/3/04 Tube Anemone
Good evening my wonderful reefers! lol
<live it, swim it, smoke it... er, well.. two of those things at least>
I won a Aplysia dactylomela the other day at a raffle. I won it on
purpose out of sympathy, I didn't want it to end up with some poor bloke w/out a
clue where it would starve to death.
<interesting... perhaps a polite mention to the club/donors to be more conscientious
about submitting items of challenging needs for random win/purchase by
others>
After a bit of hunting around my tank for some red algae (which proved
non-existent, the info on the specific type of algae these guys eat is rather
lacking, a lot of authors say they eat red algae they just don't specify what
kind! I think it must also take them a while to adjust their diet to green algae)
<I do not spy it quickly at hand... but we have a link in our bibliography
for our Reef Invertebrates book to a web page that lists the exact foods for
many species of opisthobranchs>
I tried putting in some red/purple Nori by Two Little Fishies (Julian Sprung
& Co) and my guy started to chow down.
Since then all it does is eat and sleep. hehe
<ahhh... good to hear>
I was wondering if you could tell me approx how long this sea hare
lives? I've read from 1-2 years is all.
<hmmm... I am not certain, although I recall the larger
temperate species living somewhat longer than the typical 24 months
or less>
Do they live longer if they don't mate?
<nope... not to my knowledge. There is precedent to support this in other
mollusks (like the famous octopuses with a defined lifespan, breed or no)>
It's funny, I live in Miami and went snorkeling the other day and saw a mated
pair of Dactylomelas. I didn't know mine was the same even though I've
seen them many times when I snorkel.
Also, treading into dangerous waters... are there any colorful Nudi's that can
be easily kept in a reef tank or is this a lost cause?
<hmmm... sort of. The key to any Nudibranch is identifying and supplying
their food source. Many will keep and breed easily if you can do this. I keep an
active colony (several hundred!) of beautiful blue Berghia (Aiptasia eaters).
Other folks keep and breed Elysia sp algae eaters... some folks even dabble with
the zoanthid eating species. The problem with keeping in reef tanks is that most
such systems have excessive powerheads and overflows. If you plan well though,
you can keep some beauties>
I always feel so bad when I see these really amazing looking, doomed Nudi's at
the LFS. There should be a campaign on to stop the collection of
specialized feeders such as these.
<no formal campaign is needed. Educated aquarists simply vote with their
dollars and do not buy them. They die in the dealers tank, and when it happens
enough times, the dealer stops ordering them <G>. You might help this
along with a polite mention of the reality (supported by a helpful
list of web links or photocopied documents) that you give to the LFS. If that
doesn't work... tell us their name and we'll post them on the wall of shame
<G> Ha!>
Oh, about how big will a tube anemone get in a reef tank?
<it won't... because it does not belong in a reef tank and will never be
placed there by a conscientious aquarist. If you know of anybody tempted to the
contrary, please direct them to our extensive archives at wetwebmedia.com for an
explanation why not <G>>
Will I need meters of sand eventually? lol I hope not. (
<8-12" would work nicely... let it mature for 6-12 months before putting
a Cerianthus in a species specific tank (no corals or other anemones unless you
intend to sacrifice some)>
Ah, the pot calling the kettle black I know, but I'm going to try and provide
for it) It's only 3 inches long at the moment and eating fine.
<sigh... disappointing>
Thanks for all your help! Love you guys, Morgan
<sob...sob... another anemone destined to be a statistic. Anthony :p>
Missing Nudibranch
Hi guys, hope you're all doing well...
<< I am. >>
Was hoping you might shed some light on a new addition
gone MIA. I added 2 lettuce Nudibranchs to my tank a
couple days ago as part of a two-fronted attack on
hair algae (finally got an RO/DI-- Kent Maxxima--
fertilizer-free water changes to come!), but one of
the fellows has gone missing during the 1st night.
<< Are you sure. They may hide well. >>
No signs of it stuck against a power head (all are
screened off), & no sign of him in the overflow
compartment either. I'm wondering if a tankmate may
have eaten him. << Possible, but I'll say unlikely. >>
Basically my inhabitants are currently a Mandarin
Dragonet, 2 Green Chromis, a Lysmata amboinensis
shrimp, a Spiny Brittle star, a Favia brain coral,
some Discosoma & Rhodactis mushrooms, assorted red &
blue legged hermit crabs + one scarlet reef hermit, &
some Astraea & turbo snails.
My 1st suspect is the brittle star-- I'm thinking that
with his long searching arms it may have come across
it & probably could have caught it pretty easily. I
don't think this guy is actively predacious, but could
be opportunistic? << Doubtful. I wouldn't think of him as the problem. >>
My next suspect is the scarlet reef hermit. The only
reason I really even consider him is because I had
caught him eating a "Red Footed Conch" that I had
(never was able to truly id this guy). << Well, that is possible as well, but
hermits are more of scavengers and are more likely to eat it something that has
already died. >> The hermit
would pry open the conch's little 'door' & was picking
out matter from inside. I removed the conch & put him
in the fuge, but it didn't make it. I haven't caught
the hermit assaulting any of the Astraea or Astro, but
one wonders...
My last suspicion is the Rhodactis mushrooms. One of
them is about 4 inches across, & I have seen them
close up on morsels that drift onto their surface. I
wonder if the Nudibranch could have floated onto one
accidentally & been consumed before he could high-tail
it off? << Doubtful again. >>
What do you think the likelihood of any of these
scenarios seem to you? Are the lettuce Nudibranchs
'distasteful' enough that these shouldn't be a
concern?
<< I would bet he simply just died. They aren't that hardy and being
transitioned into a new aquarium may have just been too much. They often get
blown around by powerheads into the rocks and things like that. I wouldn't
think it was predation, so much as unfortunate circumstances. >>
I'm trying not to assume the worst, & bearing in mind
that he could have just gotten into the rockwork
somehow & not being plainly visible, but I'm also
thinking that because these guys are partly
photosynthetic, that they should hang out in the
light, on rocks' surfaces, more or less, right?
Thanks for any insight you can offer...
<< I'd probably not try another. If you are having a hair algae problem I'll
assume you have a water issue problem. I don't like adding delicate items to a
system with water problems. >>
Pete Cushnie
<< Blundell >>
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