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FAQs on Identification of Stinging-Celled Animals 8
Related Articles: Cnidarians,
Water Flow, How Much is Enough,
Related FAQs: Cnidarian
IDs 1, Cnidarian IDs 2,
Cnidarian IDs 3,
Cnidarians ID 4, Cnidarians ID 5,
Cnidarians ID 6,
Cnidarian ID 7, Cnidarian ID 9,
Cnidarian ID 10,
Cnidarian ID 11, Cnidarian ID 12,
Cnidarian ID 13,
Cnidarian ID 14,
Cnidarian ID 15,
Cnidarian ID 16, Cnidarian ID 17,
Cnidarian ID 18,
Cnidarian ID 19, & Anemone ID 1,
Aiptasia ID 1, Stony Coral ID 1,
Mushroom Identification,
Soft Coral ID,
Alcyoniid ID, Xeniid ID,
Cnidarians 1, Cnidarians 2,
Cnidarian Behavior, Cnidarian
Compatibility, Cnidarian Selection,
Cnidarian Systems, Cnidarian Feeding,
Cnidarian Disease, Cnidarian
Reproduction,
Acclimating Symbiotic Reef Invertebrates to Captive Lighting, | 
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Sudden Appearance of a Bright-Pink, Flat Anemone! UFO? 3/5/07
Hello again.
<Hi there>
Last night I transferred some fishes
into my 2 month old brand new tank, which has live rock, crabs, shrimps,
sea hare
<Do investigate the biology of this animal>
and a
leather coral. All are doing well. This morning there was a
bright-pink 'thing' with a trunk of approximately 2 cm long with a flat
round disc at the end of approximately 2 cm diameter with stubby little
frills around the edges. The centre of it has green and white patches
and what looks like a little hole.
<Does "read" like a polypoid form
of life>
It wasn't sticking straight up, but bent over. Presuming
this to be an anemone I have trekked through all your pages on anemones
and I have found one picture that looks a little like the anemone I
discovered this morning except mine is luminous pink.
<Neat>
Unfortunately I do not have a digital camera so I cannot send
you a picture with this email. I want to know what the name of the
anemone is on the picture on the page entitled "FAQs on Anemone
Compatibility 1." please?
<At the top right? An Anemonia majano>
Also does the colour and shape of mine sound like it could be the same
as the one on your picture? (If the one in your picture has a positive
ID). A couple of hours later it had become completely flush with the
rock and difficult to see.
<Have never seen a bright pink Anemone
period... unless it had been dyed>
My major concern is if it an
anemone which could kill any of my fish, crustaceans or corals I would
rather take it out of my tank.
Thanks once again in advance.
Angela. UK.
Still raining
<Likely is a Zoanthid... from the
tentacle description, its sudden appearance... Do you have "reefing"
friends who might come by and take a look, perhaps a digital image to
make/send? BobF> Re: Sudden Appearance of a Bright-Pink, Flat
Anemone! – 03/09/07
Hi Bob
<Angela>
When I said I
will not probably see it again for another two months I meant because I
have had my tank set up for two months and it has only just
appeared. It can only have come in on the live rock added when my tank
was installed.
<Ahh!>
I did have a tiny 3- 4 cm across
hitchhiker xenia which came in on a piece of macro algae; I attached it
to the rocks, but it has disappeared since this strange pink creature
appeared and disappeared. Is it more likely to be the sea hare eating
this?
<Mmm, could be affecting them... maybe by just kind of grazing
over...>
I was told that they do not bother corals?
<Generally
not, no>
Thanks a bunch
Angela
PS. Doing lots of reading but
always getting conflicting information.
<Gots to sort the wheat from
the chaff... Keep an open (by slightly cynical) mind, and you'll do
fine. Bob Fenner>
Small Invasive Polyps...(Hydroids I Think) - 02/19/07
Hi Mr.
Fenner,
<<Hello Dominique...tis Eric here this morning>>
Hope you're doing fine.
<<Doing well, thank you>>
I have
some small unknown (to me) polyps that are spreading on the LR.
<<Yes, I see>>
When they reach Montipora they seem to burn the
border (1 or 2 mm) of these SPS. So far they didn't grow on the
SPS. I fear they may inhibit growth of my SPS or grow on them as
they spread in the tank.
<<A valid concern>>
One picture is
cropped to have a closer view but the other picture is already a
close shot since I used a macro lens. I tried to brush them off the
LR with a toothbrush with no success. They seem to retract in the
LR deep enough to avoid the brush and possibly regrow quickly when
damaged.
<<Is likely, yes>>
Could you please ID those polyps
and/or give me hints as to how to get rid of them or how to deal
with the problem...?
<<Well Dominique, though at first glance
these seem to resemble Aiptasia anemones what I think you actually
have here is a species of hydroid (though Anemonia Majano can't be
ruled out either). These can have very powerful stings as you have
witnessed...and can spread very quickly in some instances to
plague-like proportions. Trying to brush them off the rock in the
tank is usually futile as you already know and may even cause their
spread. There are nudibranchs that might prey on the hydroids but
these are very obligate feeders and would require identifying the
exact species of hydroid you have...all this assuming you could even
find/obtain the nudibranch. Your best option here is to remove the
affected rocks and give them a freshwater soak (maybe add a small
amount of bleach) and then leave them in the sun to dry. Obviously
this will destroy any/all life on and in the rock. You may find
alternative strategies you can try by looking through our FAQs on
these critters. You can begin by starting here, and following the
associated links at the top of the page:
http://www.wetwebmedia.com/hydrozoanfaqs.htm>>
Many thanks!
Dominique
<<Good luck, EricR>> |
Re: Small Invasive Polyps...(Hydroids I Think) - 02/20/07
Thanks for the quick answer!
<<Welcome>>
That is bad
news though.
<<Can be nasty little devils>>
I have
several colonies/frags of M. digitata on these LR. If you have
any other suggestions please get back to me.
<<Can these
colonies not be removed/placed on new rock?>>
Could using a
syringe and lemon juice or Joe's Juice to kill them bit by bit
each day be a good strategy?
<<Not foolproof, but give it a
try if you’re willing...you may be able to at least keep them at
bay>>
Maybe use a tool that scratched the LR deep enough
(unlike a toothbrush).
<<Perhaps...using a steel-wire brush,
or maybe even an old carpenters chisel to remove a layer of rock
from beneath the hydroids. You will need to do this outside the
tank in a bucket of seawater...rinsing the rock thoroughly when
done in a different bucket of clean seawater before placing back
in the tank>>
Not having to remove the LR from the tank
would be very good in this situation...
<<Not possible, in
my opinion...too much risk of exacerbating the problem by
spreading the hydroids throughout the tank>>
I did get a
peppermint shrimp and have seen no more Aiptasia since then, but
it seems it won't do the trick with this new pest.
<<Indeed,
they often won't even touch the Aiptasia...best to find/use an
alternative method>>
Thanks!
Dominique
<<Do let me
know how your battle progresses. Eric Russell>> | 
Encrusting Gorgonian? RMF.
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Species ID, No Photo, Corallimorpharia 2/19/07
Hello to the
wonderful crew at Wet Web Media,
<Hello again Brandon, Mich with
you.>
I hope this correspondence finds you all well, if not
partially water logged. I know I am.
<Been better, a little
under the weather and a foot of snow to boot!>
I am writing
because I have managed to purchase a coral that I was sure that I
could identify, and now I am less and less
sure. I was told
that it, (I am now almost certain is corallimorph), was a type of
hairy leather. From the way that it was closed in the shop it
certainly looked like a leather. Once I got it home, it opened up
to where it is in the picture.
<Mmm, sorry to say Brandon,
there is no picture here.>
I introduced some food in the tank,
and I noticed a rather large mouth come out. This is when I began
to think that it might be
something else. So I went to Wet Web,
specifically,
http://www.wetwebmedia.com/corallim.htm. Personally, I am
leaning toward Rhodactis sp., or Discosoma sp. I was hoping that
you guys could clear that up and hopefully point me to where I can
find enough info to fill in the sp.
<See above comment.>
I
was also curious about something else too. I have a 75 gallon reef
with a 20 gallon sump. The day before yesterday, I had the sump and
the tank full. Today (two days later) it would appear that I have
lost five to seven gallons in water. I was wondering if perhaps
this is normal, or should I get out the silicone, and start looking
for leaks?
<Hehee, let's hope not!>
At what rate does
normal evaporation run?
<Depends on many factors.>
Hopefully, the following information will help more, I have two 175
watt HQI 10,000K halides, and one 96 watt actinic 03 PC sitting
about 6 inches off the surface, and over the refugium in the sump I
have two normal incandescent lights. Would this much light be able
to cause all of this evaporation? We are looking at two days. I am
thinking that this is a lot.
<I would error on the side of
caution. I would definitely check about your tank, for a leak or
other potential problem, if you are concerned and have noticed a
sudden a sudden increase in the need for top off water. That being
said 2.5 to 3.5 gallons per day could be reasonable given your
lights and various other unknown factors.>
Thank you all for all
of the help that you provide, especially the help that you have
given me.
<You are most welcome Brandon. -Mich>
Brandon R.
Foster | Re:
Species ID, No Photo, Now with Photo, Rhodactis spp. 2/20/07
Sorry Mich,
Let's see if it comes through this time.
<Yay! Got it! Yes, definitely Rhodactis spp. commonly called
elephant ear mushrooms or hairy mushrooms. Can't tell you the
species, though your photo very much resembles a picture in Eric
Borneman's book "Aquarium Corals" on page 207 including the
forked tentacles, however the photo is only marked as Rhodactis
sp. These are potential fish eaters, so be careful
here. -Mich>
Brandon R. Foster |
Re: Species ID, No Photo, Now with Photo, Rhodactis spp. Part
2 2/20/07
Oh yeah I almost forgot,
Sorry to hear
that you were feeling ill lately Mich, I hope that clears up.
<Thanks, me too. Sinus infection... the box of tissues is my
new best friend. We're inseparable.>
I was sick all last
week.
<Hope you weren't as cranky as I've been.>
I
used the time to make a refugium in a 20 gallon long. My wife
said that I must not have been that sick. HA! You're never too
sick when you are high on silicone rubber sealant.
<Heeeeee!>
Right onto the matter at hand, It was in fact
evaporation that was causing the water loss, and it was a gross
over estimation on how much water was leaving. It was more like
a gallon and a half.
<Seems much more reasonable.>
I
sure did look like more though. The odd thing is that the
salinity reading didn't shift like you would think.
Perhaps
it was so small a shift that the Hydrometer that I have didn't
register the change.
<Not surprising, the loss is a
fraction of the overall volume of the system.>
But yeah 1 -
2 gallons is quite normal. Heh.
<Very good.>
Thanks
again,
<You are quite welcome! -Mich>
Brandon | 
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Polyp ID? 1/31/07
<Greetings, Mich with you today.>
Hi was wondering if you can tell me the name of the tall polyps on the
left of the picture (cylindrical with wart like surface), as well as
their aquatic needs.
<Yes, these are Tube or Snake Polyps (Isaurus
sp.). They are not commonly seen in the industry, so lucky you! Care
is the same as other members of the family Zoanthidae. They are
relatively hardy and tolerant as are other zoanthids, which, I presume
you are familiar with as I see them in your photo.
Thanks!
<You're welcome! -Mich> | 
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Softies, LPS, SPS, What's the Difference? 1/27/07
Adam,
<Adam's busy tonight Frank, Pufferpunk filling in.>
You are correct,
I skimmed your links but did not read thoroughly.
<Although guilty
of skimming myself at times, folks here have gone to a lot of trouble
looking up these links & posting them for you. Please try to respect
that & do some searching for yourself too.>
I meant no disrespect to
you by asking for a second opinion. I just thought that the more input
the better educated I would be.
<Much input/education
found by using the search tool.>
I will read the links further to
get a better grasp. Is there a difference between Softies and LPS and
Stonies and SPS or are they just synonyms?
<Softies (soft corals),
are corals without skeletons. LPS (Large Polyp Stonies) have a skeleton
& large polyps attached (generally eat meaty foods). LPS (Large Polyp
Stonies), have an external skeleton with small polyps. All info readily
available & easily searched for on your own. ~PP>
Thanks again,
Frank
Majano I.D. - 01/24/2007
Hey guys (and girls) - I love your
website.
<Thanks!>
It has got to be fun to run it!
<Umm…okay…we’ll go with that hehe.>
Okay, on to my question...
<Of course.>
My husband and I started our 75g tank a little over
a year ago.
<Neat.>
A few months after getting set up, we
noticed this little polyp hanging out. Since it didn't look too
much like the dreaded Aiptasia guys, we left it alone.
<Not
quite Aiptasia but almost as unfriendly….it appears to be
majano…http://www.wetwebmedia.com/ca/cav1i3/aiptasia_impressions/aiptaisia_impressions.htm
The above is an article which entails a little info about them as
well as some useful methods on getting rid of them.>
Since then,
it has gotten larger - it is currently approximately 3/4" across
when open. In all this time, it hasn't spread or even split once!
<Likely due to low nutrient levels…..consider yourself lucky.>
It has little pink tips on its tentacles. I'm attaching a couple
pics and I was hoping someone might know what this guy is?
<The
pictures were very helpful, thanks.>
Thanks for providing such a
great service to us all!
<Welcome.>
~Christine
<Adam J.> | 
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Coral(limorph)
ID 6/2/06
Hello to all the Crew!
<John>
I have used
this site many times and often refer others here. Great information
in a easy to use format.
<Ah, thank you and welcome>
Recently I purchased a small rock of Zoanthid corals and received a
bonus. tentative ID is LPS Scolymia species button coral, or a type
of Fungia. Attached are two photos, one with a flash used the other
without a flash. Physical description: Hard to the touch. The top or
dome (disk?) as it were is attached to a stalk or stem.
<I see
it>
The parent is attached to four smaller daughters in the same
fashion as Palythoas or zoanthids.
Any help in making a positive
ID would be helpful in making correct choices in placement and
possible feeding and or dosing additives.
John.
<Looks like
a mushroom anemone to me:
http://wetwebmedia.com/corallim.htm
Bob Fenner> | 
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