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FAQs on Identification of Stinging-Celled Animals 9
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 8, Cnidarian
ID 10,
Cnidarian ID 11,
Cnidarian ID 12, Cnidarian ID 13,
& 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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ID on live rock...
Octocoral – 10/18/07
Hello,
<Hi John, Mich with you tonight.>
I was wondering if someone could help with an I.D. of life that came on
a piece of live rock I purchased the other day.
<Well at quick glance I thought it was a sponge, but it is not. On
closer inspection it looks like an Octocoral of some sort, perhaps of
the family Clavulariidae. A nice surprise for you.>
Picture attached.
Thanks,
<Welcome! Mich>
John |
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Cnidarian Identification
10/17/07
Hello again
<Hello>
The sack like growths are in the photos at the top and bottom of this page
www.wetwebmedia.com/cnididfaq4.htm. Do you know what they are now? They had
covered the tank within weeks. Do you know where they came from or what I can do
to get rid of the remaining ones, in case they spread again?
Thanks again,
Danielle
<To quote Bob on the FAQ, "Leave them... look like some sort of polypoid
life...". I could not venture a more accurate guess.>
<Chris>
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Id: Staurocladia oahuensis -
10/16/07
Hi,
<Hi there, Ben>
This tiny little fellow, about 50 thousandths of an inch across, is presently
adhered to the front of my tank:
http://www.flickr.com/photos/fyngyrz/1573547118/
<Nice photo!>
He looks like a baby anemone of some kind to me. Any of you recognize the lil'
fellow specifically?
<Heeeeee, well, not that one specific individual, but I do recognize the specie:
Staurocladia oahuensis. These are tiny crawling hydromedusae, also known as
hydroid jellyfish, and are generally not a problem. They typically wax and wane
in aquariums, sometimes appearing in great numbers, only to disappear a short
time later. Please see these links for more information re:
http://www.wetwebmedia.com/jellyidfaqs.htm
http://www.ronshimek.com/Animal%20Groups%203%20Cnidarians.htm >
Thanks!
--Ben
<You’re very welcome! –Lynn>
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Coral Identification 10/14/07
Hi crew....Anthony, Bob, Steve... how is going...
<Going well, Carlos, James with you today.>
I attached a picture of a recently purchased coral or coralymorph,
<corallimorph>
so can you help me to identify it??
<Looks like Ricordea Florida. Go here for more info.
http://www.wetwebmedia.com/corallim.htm>
Thank you very much.
<You're welcome. James (Salty Dog)>
Carlos |
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Re: Creature ID,
Pseudocorynactis sp, Aiptasia – 10/04/07
>Hi,
><Hello Ben! Sorry for the delay. I had some problem accessing your links>
No problem. Just wanted to be sure you got it.
<<Yes! Got it!>>
Now maybe I can help you. That link is to "flickr"; flickr uses Java, but
otherwise should work with any modern browser. It is one of the most widely used
sites in the world for images. Firefox will work perfectly, as will Opera,
Safari, Explorer, Omniweb and Mozilla. Just make sure Java is on. Firefox is
*highly* recommended - best browser on the planet, and it is free.
<<I have a Mac so I'm using Safari.>>
>just a cornucopia of living goodness.
><Amazing, isn't it?>
Indeed it is.
<<One of my favorite things was just watching what developed from the LR.>>
>We popped it in our 55-gallon tank, which was about two months old at the time,
and everything has done just fine.
><Glad to hear! Is this the tank in your bathroom? Is quite a beautiful bathroom
I might add!>
Thank you. My sweetheart and I built it. This was an empty box, an abandoned
church, and we're building an interior into it as time and funds allow.
<<How cool! You have done a beautiful job with the bathroom for sure!>>
Yes, that's the bathroom tank. We have three others that are freshwater. Odds
are good there are more salt tanks in our future. We have room, and motivation
is growing. No surprise to you, I'm sure.
<<Yes, as one of my crewmate Andrea said... Multiple Tank Syndrome is hard to
fight.>>
>But do watch out with this Xenia... it can become a "weed".>
Not sure I mind, really, I find them quite beautiful. Especially when they
pulse.
<<Assuredly! Xenia can be quite beautiful, some people can't get xenia to grow,
while others can't get rid of them!>>
The intent is to make a reef tank, not so much a fish tank, but I'm not sure
we're looking for conventional imports - I'm very curious to see what grows. All
manner of things are starting up. If they really get crazy, maybe I'll put them
in a new tank. :-) They took transport poorly, took many days to recover, and
some died. Be easier if they were local.
<<Absolutely, shipping is a big problem with this coral.>>
>We only have a couple of small, innocuous fish at this point, going slowly.
><Slowly is good!>
That's my understanding. I'm patient. Mostly. :-)
<<Heehee! Can be hard but is worth your while!>>
><This appears to be Pseudocorynactis sp, a corallimorph.>
Ah. Thank you. With the name, I found a pic and a little info on your site. Very
good.
<<Glad to hear!>>
><This may be an Aiptasia that has collapsed upon its self... a good thing...
more reading for you below on this matter.>
Nope, definitely the same as the other patch; opens nightly now. Funky little
thing.
<<Oh Good! Pseudocorynactis sp. are very desirable corals.>>
>The last patch of jelly still looks the same as shown in the image above.
Here's how a closed one looks:
><This pic is a duplicate of the Xenia.>
Now THAT is just plain weird. I still have the original email in my outbox, and
the correct three pictures are linked. Can you tell me what web browser you are
using?
<<Safari.>>
Something is flat busted. You're not using... cough... AOL, are you?
<<Heehee! No.>>
Because there's just no polite way to put it, AOL is last decade's technology
today, busted, crippled, censored and laden with the digital equivalent of
Aiptasia. Or copper sulfate. :)
<<Heehee!>>
><Ummm, if you like Aiptasia... You will want to try to eliminate this pest.
More here:
Yes, I've read all about them, and am willing to throw one or more nudibranchs
in there if required,
<<Can work, but I would recommend other means first. Especially while you have a
reasonable amount to get rid of. I would recommend injecting the Aiptasia with a
syringe filled with either Calcium or Lemon juice. The Berghia nudibranch are
good, but are obligate Aiptasia eaters... therefore once the Aiptasia are gone
the Berghia will slowly starve to death. The other means can be effect.>>
but so far, they just seem interesting and pretty to me.
<<So far but you really will want to get rid of them. They can kill and limit
the grow of other desirable species.>>
No migration. Yet.
<<Yet being the key word here...They can really take of and multiply very, very
quickly.>>
If they start killing things, as seems likely from everything I've read, then
it'll be a nudibranch picnic as soon as I can get some.
<<Again I would recommend other means first, and use the Berghia only as a last
resort. Cheers and good luck to you Ben! Mich>>
Ben
Marine Betta not Feeding
Picture... ID Palythoa – 08/26/07
Including the picture often helps.
<Yep!>
The coral I am curious about is on the left.
<Mmm, hope you mean top.>
I assumed for a long time that they were rock anemones but now I
actually have some glass anemones which look entirely different.
<The corals in your picture include a mushroom on the bottom and on the
top are Palythoa. More here:
http://www.wetwebmedia.com/zoanthid.htm
Similar photos here:
http://www.wetwebmedia.com/zoidfaq2.htm >
Thanks,
<Welcome!>
Zach
<Mich> |
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Strange Floating Creature
8/14/07
Hi wetweb team,
<Hi Peter>
I've been a long time reader of browser of your site. I find it invaluable for
all my freshwater and marine fish keeping needs. I currently have a 75gal reef
tank which has been set up for a year+. I have taken the fish out lately to do
some heavy duty aqua-scaping. Without any fish there seems to be a tremendous
bloom of life around the live rock. Tonight I took my flashlight and looked at
the tank in the dark. To my surprise there was a squishy looking little
jellyfish type creature in the water being blown around. I have seen what looks
to be like hermit crab larvae before but this is something new. I quickly took a
medium sized cup and captured it as it came close to the surface. This creature
looks like a medusa stage of some animal though I do not know what it could be.
It pulses like a jelly fish.
The white protrusions have a property of being sticky as it is now clinging onto
the wall of cup. I was thinking of keeping it alive and seeing what it turns
into. Enclosed is a picture I drew of it as best I could. To be honest, that is
exactly what it looks like. Thanks for all your guys help and advice.
<I'm thinking you are correct, more than likely, some type of jellyfish.><<Or
perhaps a Hydrozoan in the medusoid stage... or even a Ctenophoran. RMF>>
Sincerely,
<You're welcome. James (Salty Dog)>
Peter Cao
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Visual identification, Polypoid
life... 5/30/07
I just noticed this guy growing in my tank, at first i thought he
was a featherduster or tubeworm of some sort but i haven't been able to
turn up any searches that look like this one. unlike a feather duster
this guys stem is soft and when it retracts it retracts stem and all to
were it is just a spec on the live rock. do you know what it is?
<Mmm, see the number of tentacles? Is an octocoral... See that their
pinnated? Please read here: http://wetwebmedia.com/cnidaria.htm
Bob Fenner> |
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Re:
Tank Upgrade, Critter ID and Clownfish Question. 5/24/07
Hi Justin and
all at WetWebMedia its Ben here from the UK, I hope you have had a good
Easter and haven't eaten too many chocolate eggs.
<I didn't even get one!>
Am not sure if you recall me saying that I am looking to upgrade my
45litre tank to a 3ft 100litre tank at the end of the month and after
looking at the FAQs about upgrading I thought I would just run past you
how I plan to make the change. I think I am going to set the new tank up
in its new space and fill it up with about 60 litres of bought salt
water and leave it overnight to warm the water to as close to the main
tank as possible. How does this sound so far?
<I would actually first fill it with freshwater only... to test for
leaks, levelness, hook up all the gear, make sure it's functional...
leave this go a day or two...>
My next question is in regards to substrate. I currently have 20lbs of
CaribSea live sand in my main tank and am wondering if it is worth
buying another pack of the same sand to place in the new tank or should
I just buy plain marine sand and then seed it with the established
substrate?
<Either one...>
How much would I need to add to the new tank?
<Posted... read here:
http://www.wetwebmedia.com/marine/setup/index.htm
scroll down to the greenish line... on Marine Substrates>
Once the water in the new tank is at the same temperature as the main
tank I intend to start adding water from the old tank to fill it up,
before doing this would it be best to add all of the live rock or is it
best to fill the water up and then add everything all at once?
<... also posted... Please learn to/use the indices, search tool>
My LFS has said that it is best to add everything all at once, they have
also recommended that I purchase SeaChem stability and SeaChem prime to
add to the new tank for the first few days, does this seem ok?
<Sure>
Once everything has been added to the new tank I would like to purchase
more live rock, I think I will gradually add 1 small piece every
1-2weeks just so that it will hopefully keep any spikes to a minimum.
I think those are the only questions that I have regarding the tank
move, if I have missed anything important out please let me know.
<Just reading... there is much ancillary/related material you will
encounter by investigating thus.>
I feel I should mention that I am going to be using the same AquaMedic
BioStar flotor from the main tank so hopefully the bacteria will still
be present.
My next subject (sorry about this) is in regards to a naming a creature
that I have found on my live rock, Am not sure if you remember me saying
about this creature in my first emails (it resided directly below my
leather toadstool) I have hopefully attached a picture of it for your
perusal, at present it does not seem to be causing a problem, am fact I
quite like the little guy, under actinics the tentacles? fluoresce a
nice green colour.
<Mmm, looks to me like a Zoanthid>
Lastly I have one other question for my own interest really, its nothing
serious its quite amusing I think, have you ever known a clownfish to
host a feather duster?
<Yes>
As mine has decided that he likes to sleep and wriggle inside the head
of my white feather duster, he loves it. Is there an explanation for
this behaviour or do I just have a really friendly clownfish :). Again I
have attached some photos for you to see.
<Are close symbionts in the wild... or consumed... with Actinarians...
look for substitutes in captivity>
I thank you again for all of the help that you have given me over the
last 6 months and I hope you can help again.
All the best to you all
Ben Sandford
<Be chatting, reading... Bob Fenner> |
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Help ID, Beaded Anemone (Heteractis aurora)
and Palythoa 5/8/07
<Hi Michelle, another Michelle with you tonight!>
Thank you for an excellent site full of helpful info.
<Glad you think so!>
It has been an invaluable tool for me with both my saltwater and
freshwater tanks.
<Tis good to hear!>
I currently have a 20-gallon long tank with 22#'s of live rock 4
electric blue hermits, 1 chocolate chip sea star,
<Mmm, these often don't do well in captivity. They are not reef
compatible and may eat sessile invertebrates, soft and stony corals,
even anemones.>
5 purple mushrooms (started with 3, but they budded into new babies) a
very large red sea squirt that came on my live rock, a monster sized
turkey wing approximately 4" length, (also a hitch-hiker) and a rock
with over 50 zoas on it. The live rock is a mixture of Florida
aqua-cultured and Caribbean live rock. My tank parameters have been very
stable for a small tank, ph 8.2, ammonia 0, nitrites 0, nitrates .5, and
calcium 380. I do a 10% water change every week and do tests 3 times a
week. This tank has been up and running for a year.
<Excellent!>
I still do not have any fish in this tank as I'm trying to decide what I
would like. The fish I decide on will be the only fish in this tank
(just 1).
<Very wise!>
I do need some help with identifying 2 critters in my tank that have
come as hitchhikers on my live rock. It does have an appearance of a
type of Aiptasia, but much prettier. There are only 2 in this tank and
they have not spread to any other live rock in my tank. I would like to
have someone more experienced in identification to confirm this for me
before I "accidentally" zap a possible good guy.
<Looks like a beaded anemone (Heteractis aurora) to me, typically
prefers a sand bed but it will relocate if it's unhappy. A little more
here: http://www.wetwebmedia.com/marine/inverts/cnidaria/anthozoa/anemones.htm
>
The other critter is a small round shaped. It does have small tentacles
that are out constantly looking for food. I feed it small pieces of
Mysis shrimp every other day. It has been rather entertaining watching
it eat as it puffs up around the food. Since finding it, it has grown
from a small eraser head size to the size of my thumbnail.
<Mmm, likely a Palythoa. Though Palythoa will generally close around
the food item like a purse string. More here and related links in
blue: http://www.wetwebmedia.com/zoanthid.htm >
Even though my tank has been up for a year, it's still amazing to see
new things on there that I didn't see before.
<One of my favorite parts in setting up a tank is watching what grows
out of the live rock.>
Hoping everyone has a great week.
<And the same to you!>
Michelle
<Cheers! Mich> |
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Strange creatures on the aquarium glass 5/3/07
Dear Sir,
<Adeel>
I hope you are doing good. This is my first time, so I apologize if not
following any fixed procedure for asking a question.
<You're doing fine>
Tank Details : I have a 50 gallon fish only salt water tank with some amount
of live rock. Its been about 6 weeks or so since I setup the tank. I collected
water from the sea FYI. I have two 3 striped damsels. Just today I added a pair
of percula clown. All other parameters are normal...since I believe the nitrate
cycle must be complete by now.
<Yes>
Question : I have noticed very very tiny almost a dot sized white spots on the
aquarium glass. On close observation, I noticed the white dots actually have
tiny white hair/spikes...almost like a tiny microscopic sun or a microscopic
flower. It is totally white. When I push it off the glass with the tip of a
stick, the creatures just falls off and floats with the water current till it
settles down. I hope I have given a good description. What are these things and
do I need them?
<Mmm, could be a polyp form of life of some sort... Cnidarians... of any of the
three Classes... Hydrozoan... Scyphozoan... or...?>
Are they beneficial...if not how can I kill them?
<No way to tell, and not likely easy... Very likely "came in/along" with the
water... If you want to continue to collect your own, it needs to be
processed... in the dark, by poisoning possibly... Please read here:
http://www.wetwebmedia.com/seah2onatural.htm
and the linked files above>
I have put in too much in setting up the tank and cannot think about losing it.
Please tell me if these creatures are safe or not although they are microscopic
sized. Just to add. I have also noticed those white roach type bugs that run
around on the glass.
Thanks for all your help.
Adeel
Let me know if you need a picture. Its very difficult as they are microscopic,
but I can try anything to save my tank. I am writing all the way from Dubai and
I love your website. Good work.
<Thank you for your kind, encouraging words. Chances are that what you describe
is not problematical... But again, I would at least store all new water in the
dark for a few weeks before using. Bob Fenner>
Unknown hitchhiker White Ball Corallimorph (Pseudocorynactis sp.)
4/27/07
<Hi Jim, Mich here.>
Would you advise your best opinion as to what this creature is.
<Yes, looks to be a White Ball Corallimorph (Pseudocorynactis sp.)>
I found it on an empty snail shell in my tank.
<Likely a hitchhiker.>
One opinion from another forum was that it is a bleached majano anemone.
<No. It is not a Majano anemone. Is a lucky addition to your tank. You
might try offering this coral finely chopped fish at night or when the
tentacles are extended. They are not common in captivity so enjoy
it!>
Thanks for any help.
<You're welcome! Mich>
Jim
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Trying to Identify This, a Coral Perhaps
- 04/25/07
Greetings,
<And salutations! Mich here.>
I have attached a photo of a creature that hitched a ride on some LFS
cured live rock that I recently purchased.
<OK.>
I've taken several pictures but have not been able to get one with the
eye. The eye is just off the shadow to the left of the creature.
<Eye?>
I am not sure whether or not if it alive or calcified.
<This would be helpful info.>
Any help in identification or a site that may be able to identify would
be great.
<It is difficult to say with the limited information provided, generally
the more info you can provide the better, i.e. is it motile or
non-motile, is it fleshy or stony, is it smooth or rough, etc. I
suspect this is a stony coral or polyp of some sort, though it also
resembles a shell. It is difficult to say with the limited info. It is
unlikely anything harmful.>
Thanks
<Welcome, Mich> |
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Is this it? RMF cropped |
Pics and ? Nudibranch and polyp/anemones
3/28/07
Hi there to all the crew. My name is Tracey. I have a 125 gallon
reef tank and have for about 13 years now. I have two things I would
like to address here.
First, I have a couple of colt coral that started suddenly not doing
well. Like they were being stung,
<Consumed, predated...>
but nothing was near enough even with current that would make that
probable. I needed to top off my water and added my upped the
alkalinity just enough to irritate the critter that was causing the
problem to come into view. I am attaching a pic of this beautiful
guy which I think is maybe a Nudibranch?
<Yes... at least a Opisthobranch/Seaslug...>
I'm surprised to see this now as I have not added anything new in
months. I took him out and place him in quarantine until I learn
more. I have seen and removed these before quite some time ago, and
they had more of a pink color but were smaller. This guy is about 1
1/2" long and 3/4" wide. I removed him with tweezers and he had a
sticky and slimy substance left behind what ever he came into
contact with. I have found them near the base of the colt only. I'm
not seeing flesh decay of the colt, it looks more like it being
stung though I'm not certain. The base of the colt looks like it is
separating some from the rock. He looks better already after only an
hour of removing him.
<Is/was being chewed... keep your eyes peeled for others>
Ok, my next issue is this. I have several different polyps in my
tank and have had a new species of some sort pop up and they
multiply quickly. They split in half and they just move around and
make more, even through the current. They grow on the glass, in the
sand, on the rocks like crazy, and I have seen them grow attached to
other coral. I'm wondering if this is some type of anemone rather
than polyps.
<Mmm, some pix look like Zoanthids... others summat like Anemonia
species>
I did have an Aiptasia problem and got that problem under control,
so I'm pretty sure that's not what these are. I took out a few rocks
that are just covered in about a months time and quarantined them
also. I'm sending a few pics of these as well. Thanks in advance for
your time and help. I love this site.
Tracey
<Do take a scan on/over WWM re these species... best to not let
proliferate/cover too much of your LR. Bob Fenner> |
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