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FAQs about Non-Vertebrate Animal Identification 17
Related Articles: Marine Invertebrates,
Quarantine of Corals and Invertebrates,
Feeding Reef Invertebrates,
Lighting Marine Invertebrates,
Water Flow, How Much is Enough,
Related FAQs: Non-Vert IDs 1,
Non-Vert IDs 2, Non-Vert IDs 3,
Non-Vert IDs 4, Non-Vert IDs 5,
Non-Vert IDs 6,
Non-Vert IDs 7, Non-Vert
IDs 8,
Non-Vert IDs 9,
Non-Vert IDs 10, Non-Vert IDs 11,
Non-Vert IDs 12, Non-Vert IDs 13,
Non-Vert IDs 14, Non-Vert IDs 15,
Non-Vert IDs 16, Non-Vert IDs 18,
Non-Vert. ID 19, Non-Vert. ID 20,
Non-Vert. ID 21, Non-Vert. ID 22,
Non-Vert. ID 23, Non-Vert. ID 24,
Non-Vert. ID 25, Non-Vert ID 26,
Non-Vert ID 27, Non-Vert ID 28,
Non-Vert ID 29, Non-Vert ID 30
Non-Vert ID 31, Non-Vert ID 32,
Non-Vert 33, Non-Vert ID 34,
Non-Vert ID 35, Non-Vert ID 36,
Non-Vert ID 37, Non-Vert ID 38,
Non-Vert ID 39, Non-Vert ID 40,
Non-Vert ID 41, Non-Vert ID 42, &
Marine Invertebrates,
Marine Invert.s 2, Marine Invert.s 3,
& FAQs about: Marine Invertebrate
Behavior, Marine Invertebrate
Compatibility, Marine Invertebrate
Selection, Marine Invertebrate
Systems, Feeding Reef Invertebrates,
Marine Invertebrate Disease,
Marine Invertebrate Reproduction, &
LR Life Identification, LR
Hitchhiker ID 1, Anemone
Identification,
Aiptasia Identification, Aiptasia ID
2, Worm Identification,
Tubeworm ID, Polychaete
Identification, Snail Identification,
Marine Crab Identification, Marine
Invert.s 1, Marine Invert.s 2,
Marine Plankton, | 
I'll take some of that! |
What is it? 11/14/06
I know you get overloaded with “what
is this creature?” questions. However, I have browsed your webpage
and only become more confused on whether it is some type of worm,
snail or slug. I just noticed him crawling around the live rock a
few days ago and our tank is over 2 years old. He has two small
antennas, and what looks like a soft type shell on his back. You can
also see in the second picture a very obvious sucker and is about 1
inch in size. I am assuming he came in with the live rock and has
just matured enough to be seen.
I am just curious, any
suggestions would be helpful.
I always like to tell those who
look in my tank what is there.
Thank you
Shannon
<Does
it have a shell? Maybe a Stomatella Michelle says... Eric doesn't
see the shell, thinks it's a Nudibranch... Me? I've had too many
Kona Brews to tell... BobF> |  
|
Re: what is it? 11/15/06
Dear "crew",
Ok, I'll
look up some pictures of a Stomatella. I have never heard of those, a
few more faq's on Stomatella's would be great. It does have a shell. The
little creature showed up again last night and I reached in to touch him
and there is a hard shell on his back.
Shannon
<Mmm, use your
search tool/s on/off WWM with the genus name... Plenty there. Bob
Fenner> Re: Re: what is it? 11/15/06
Thank
you for heading me in the right direction. After doing some more
research on a Stomatella, I am 100% sure I have a Stomatellid. However,
I am a bit concerned because the posting that lead me to this critters
name was about how they had over run a tank.
Is this a problem I
should be concerned about?
<Mmm, highly unlikely>
Since I have
one, are there probably more that came in with the live rock. How big
will he become?
<Not too large... not a problem>
It seems
otherwise he will be a good cleaner for the tank and I should just let
him go about his business.
Your thoughts and any other facts on
stomatellids would be appreciated.
Thank you,
Shannon
<Mmm,
the Net... Bob Fenner>
Unknown Creature - 11/11/06
Hi,
<<Hello>>
I love
your site.
<<Thanks!>>
I recently noticed hundreds of tiny
white creatures on the glass walls of my tank.
<<Cool>>
They
are smaller than the head of a pin and are barely visible under a
low powered microscope.
<<Copepods likely>>
I sent a small
picture of one of them.
<<Mmm yes, a drawing actually...but a
good/descriptive drawing>>
Sorry if the picture is vague but it
was all I was able to see.
<<Enough to go on/venture a guess>>
I know that there are probably many types of certain species but is
there a certain group you can put this organism in?
<<Indeed...I
believe it to be a Harpacticoid...a copepod>>
Is it possible to
tell if it is harmful or not?
<<These are beneficial, even
desirable organisms. Many of the creatures you keep will consume
these very quickly>>
Thanks for any help you can give me,
Michael
<<Happy to share. Eric Russell>> |
|
Help with IDs on weird things in my tank 11/6/06
Hey WWM Crew
:)
<Howdy>
I admire the bejeebers out of y'all and appreciate
your help.
I've asked the folks at the LFS about some of these
things, and they don't seem to know. One senior guy suggested that we
should get an arrow crab to get them
<Them?>
out of the tank but
upon further research, an arrow crab would probably be a bad thing.
First the details:
90 gallon Oceanic Bowfront with 30 gal sump below
including refugium and in-sump skimmer. Bio Bale to reduce noise.
Lighting is an Orbit SunPaq Dual Daylight (10,000K & 6,700K), Dual
Actinic (460nm & 420nm) and Lunar Light strip.
Temp is maintained
79-80
Salinity is 1.026 measured with refractometer
Nitrates - 0
Nitrites - 0
Phosphates - 0 - we use a Phosphate Reactor
Ammonia
- 0
Calcium 400
KH - 125
<?>
To double check my own
test, I took a sample down to the LFS yesterday -
they use a totally
different brand of test - to confirm. Water was all good, Ph was
slightly low at 8, resolving with buff.
But, I have these weird
things in my tank. The first I removed after watching it play now you
see me, now you don't. From everything I've been able to find, and
lacking knowing what it is, that is a very small amount, it's some kind
of bad sponge.
http://www.webspecialty.com/aquarium/whatzit1.jpg
Next, these
sponges??
<... seem to be...>
have started growing under one
rock. I found one kind on your site, seems innocuous but the big puffy
things may be Ascidian??
<Possibly>
That means I don't
know. But they're spreading and I'm wondering if they're good or bad
and if they should go. http://www.webspecialty.com/aquarium/sponges.jpg
The one on the bottom - close-up - is here
http://www.webspecialty.com/aquarium/sponge2.jpg
Now, on to the
worms?? I've searched and searched. The guy at the LFS looked at this
picture and said these were bad and suggested the arrow crab. But I've
watched them, they really don't come out much, they never seem to bother
the corals, and there are countless scads of them in the tank. http://www.webspecialty.com/aquarium/stripeworm.jpg
The next worms are different. They come out in the dark or when the
actinic only is on. They're soft, white and sway a lot.
http://www.webspecialty.com/aquarium/whiteworm.jpg They are also
numerous in numbers and come out of the sand as well. As with the other
worms?? They don't seem to bother the corals.
<I wouldn't worry re
these worms... or make overt movements to remove them>
But something
is bothering the corals. They seem to do great for months and suddenly
crash. Somebody suggested that a hermit crab walking on it might cause
it to die. We have two skunk shrimp, one peppermint shrimp and a number
of hermit crabs, two emerald crabs, one strawberry crab and snails.
So I guess what I'm asking is are these good critters or bad
critters? The fish in the tank are a regal tang (huge, trying to
catch), an orchid Dottyback, one azure damsel, 3 firefish, 1 Banggai
cardinal, 1 yellow wrasse. As long as the big tang is in the tank, we
have problems as it likes to rearrange corals and rocks and knocks
things over a lot. We have very few corals, a pineapple coral, a candy
cane coral, a tree leather coral suddenly not doing well, several
mushroom polyps, assorted polyps and grape coral, and some xenia that
are morphs of their former beautiful selves.
Any help would be
deeply appreciated. I sent links vs. attaching photos to make it easier
for y'all.
<Thanks>
A thousand thank yous for your attention and
response,
Lisa
<Welcome in kind. Bob Fenner> | 
|
Little Piles of Sand - 10/21/06
Hi.
<<Hello>>
Just a
quick question for you.
<<Okay>>
I just recently noticed, this
week, small piles of sand popping up. I was curious which creature in
my tank could be making these.
<<Maybe a species of worm or small
sand-dwelling crustacean>>
We've had our tank for a year now and
never have seen this before.
<<Possibly newly introduced on live
rock/coral additions>>
The livestock we have is:
Mandarin goby
Powder blue tang
2 clown fish
Dwarf lionfish
Purple Gramma
Picasso trigger
Bi-color blenny
And finally we did recently add
a very small zebra eel (oops forgot to add) we also have 2 cleaner
shrimp, a couple turbo snails and a few hermit crabs.
<<Mmm, am
curious as to the size of this tank. I suspect long-term overcrowding
here>>
If you have the time, we'd love to find out what could be
making these piles all of the sudden.
<<Perhaps you can provide a
picture to help?>>
PS - we did change some rock around a few months
back and a very very tiny brittle sea star came crawling out but have
never seen him again.
<<Probably still around...these ophiuroids are
not fond of the light>>
Thanks for your time!
Sincerely,
Olivia Mendonca
<<Regards, Eric Russell>>
You have new Picture Mail! And Crap English! - 09/14/06
Hey
yous, great site yous got here, I spend lots of hours just checkin
things out. Well I'll be short with this question, what the heck is
this? found it in my refugium this morning on the glass in the
skimmer section. tank is only up and running three months,75 gal,
100 lbs of live rock, 3 inches of live sand, two damsels so far and
apparently this thing, your help would be appreciated, thank you,,,
Chris..P.S sorry for the pic its from my cell phone.
<...
bizarre... but looks like a terrestrial larval insect... of which
there are exceedingly few that are marine (though quite a few that
are freshwater). This is likely a juvenile polychaete worm. BobF> | 
|
Bryozoans? - 09/06/06
Hi Folks,
<<Jan>>
As usual, thanks
so much for the great service that you provide!!
You & your
website have become an indispensable component in my efforts to create a
happy & balanced tank.
<<We're pleased you find the site useful>>
This stuff (see attached photo) has started growing in my tank, which is
a new tank (since May 2006). I have no idea what it is.
<<Mmm, the
picture could be a bit closer...is difficult to discern...>>
Can you
help?
<<I have three guesses here Jan...this looks to be either a
species of hydroid, in which case you may want to take action to
remove...or, more likely I suspect, a species of Bryozoan, in which case
you can sit back and enjoy while they last...and my last guess would be
a species of sponge, also no reason for concern>>
Thanks,
Jan
<<Quite welcome. EricR>> <My guess is with Eric's. Likely Bryozoan
colonies. RMF> | 
|
Orange Hair-Like Things - 09/04/06
Hello crew!
<<Hey Josh!>>
Just a real quick question.
<<Okey-Dokey>>
I noticed last night
on the live rock next to my clam, there are several very very small
hair-like things... worms maybe?
<<Good possibility>>
They are
orange and all come out of the same spot, almost like tentacles.
<<Ah, yes...a Serpulid worm possibly...or maybe even the arms of a small
serpent or brittle starfish>>
Are they bad?
<<No>>
Are they
going to injure the clam?
<<No>>
One is almost touching the
small foot of the clam. I moved him temporally until I hear back from
you. Thanks...
<<I don't think you have anything to be concerned
about here>>
Josh Henley
<<Regards, Eric Russell>>
Some new tank mates: who might they be? 9/1/06
Hello
crew.
<James!>
New discovery number 1 looks like a sand dollar;
or at least is round, flat and about double the size of the tiny
gray/white starfish that seem to proliferate like weeds.
<Mmm, might
be these... Asterina>
I put the size at about maybe 6mm but I never
get a great look. What I have seen looks like an amber color. The
substrate came from the Caribbean. What other flat critters would fit
the bill?
<A bunch... mainly mollusks, echinoderms...>
I had
never seen a live one before.
New discovery number 2
looks like a jellyfish. This was discovered while cleaning the tank. It
was extremely small and I would put the size of the ‘medusoid’ form at
about 3-4mm in diameter. The color was a translucent white. I don’t
recall seeing anything resembling tentacles. Are there any desirable
coral larvae that fit this description? If not when seen again I shall
remove.
<Pix please>
Wish I had pictures but there was no
getting to the camera in time.
<... maybe next time>
A note for
Bob (please pass it on if you would): I don’t know if you are still in
NJ, I couldn’t make it down to Jenkins for the NJ Reef gathering. I
would have loved to have been there.
Thank you.
James A. Zimmer
<Sorry to have missed you. "Lost" your contact info. (either the ISP
server deleted from being "old" or somehow I clicked it off... just
stayed in/around Belmar... but a hoot! BobF>
Re: Some new
tank mates: who might they be? 9/2/06
Awwww =(
Unfortunate, but it happens with computers all the time. Just be glad it
wasn't catastrophic hard drive failure... been there and OUCH (even with
backup data)!
<Yeeikes... I try to be diligent re backing up to a
remote HD... every month and before long trips>
I had a continuation
of events that left me more than drained so I am unsure about how I
would have made it down to Belmar and been coherent. They are now about
1/2 solved.
<Only half way to go!>
Assuredly, we shall have a
chance to get together on another occasion I am sure. It would have been
nice to sit and have a few beers and chat though.
For future
reference:
James Zimmer
I have seen neither of the two critters
I mentioned in this email since I wrote... I will be diligent and take
pictures if at all possible. I thought the 'jellyfish-like' form was
just a shell from an amphipod at first but then I noticed it was round
and more jelly-fish like.
James
<Mmm, still... many
possibilities. BobF>
Small eel? 8/25/06
Last
night, after the lights were out, and we were heading to bed, my husband
checked our 55 gallon tank again. He then asked me if I knew anything
about a small worm-like thing that could swim in the current. After
watching it for a few minutes, we decided to try and net it to remove it
from the tank. It was surprisingly easy to catch, and we put it in a
small Tupperware type container.
Taking a closer look at it, it
swims like an eel, is about a three quarters of an inch to an inch long,
white in color, with a bluish tip (about an eighth of an inch long) to
the tail. Under a magnifying glass, it appears to have a ridge/fin down
it's spine.
Our tank inhabitants are: 1 clownfish, 5 blue/green
chromis. 1 lawnmower blenny, 1 mandarin, and 2 clown gobies. Plus of
course, the cleanup crew, and coral.
We put the unknown fella into
our quarantine tank for now, until we can hopefully get an ID on him. My
digital camera should be returned to me next week, so I can hopefully
get a picture of him. Any help with ID in the meantime would be
appreciated.
Thanks,
Jenn
<Is likely a worm species of some
sort... there are many, and a bunch of these do "come out" at night...
Look closely at some nighttime feeding video of Manta Rays... should be
on the Net... Youtube.com... see all that swimming wiggling worm-like
plankton? Bingo. Not likely harmful. Bob Fenner>
Marine
"Rolly-Poly" Bug - 08/06/06
Hi Guys,
<<And gals...Morning to
ya>>
I found a critter in my tank and am loss as to what to do with
it. It is about 1" long with a hard oval 'shell' on it's back the size
of a small fingernail with a few faint stripes. It has two long thin
antenna and several short spiky protrusions. The underside appears to
be flat and snail like. It glides along and will roll up into a ball
when dislodged.
<<Mmm, sounds like a species of Chiton...likely
nothing to be concerned with>>
I currently have it sitting on the
counter in it's own bottle of H2O and will give it a bubbler till I hear
from you as to whether it goes back or is a pest I don't want. I did
look up on the site but didn't see any pics or descriptions that looked
similar.
<<Can't be certain without a positive ID, but I would place
back in the system and observe, enjoy...can remove if it "proves" to be
"unfriendly">>
Thanks,
Nancy
<<Regards, EricR>>
Re: Marine "Rolly-Poly" Bug - 08/07/06
Thanks.
<<Welcome>>
I just put the little guy back in and he promptly crawled off.
Guess
he is glad to be home.
<<Indeed...I have dozens (hundreds maybe) of
Chitons in my system...no more destructive to fauna than Astrea snails
in my experience...and better bioturbators...>>
Nancy
<<Regards,
EricR>> Anemone ID... No, but... 8/3/06
I looked through all of your postings on the Anemone ID pages. After
browsing the Cnidarian pages, I'm not even sure this is an Anemone.
<Many closely resembling Cnidarian groups...>
I didn't see any
photos of this one, though I did see a roughly hand drawn picture on the
top of the AnenomeID1 page. Unfortunately I couldn't find it again with
an actual description. Also, it looks similar to the fuzzy picture at
the top of the
http://www.wetwebmedia.com/cnididfaqs5.htm page, but I couldn't get
a definitive answer on what this is. Really, I just want to know if
this is something I should kill or not.
<?... then not>
This
was the first one I noticed (shortly after tank cycled, about 4 mo ago),
but there have been 2-3 others that popped up in the last couple months,
and probably another ten in the month since then.
<Mmm... define a
"pest", "weed"... an undesirable organism... in too great a prominence,
number... crowding out other life, utilizing more than space that you'd
like to have dedicated else/other wise>
The biggest one is about
1/2" at the most. I had this same type of thing in my 55 gallon FOWLR
tank last year, and a peppermint shrimp and increased Kalkwasser
completely eliminated them. (I tried to pick them off for several
weeks, but they kept coming back).
Here are the photos, but they are
a little fuzzy. The organism in question has a meaty base, with little
tufts of "hair" sticking out of it's top.
http://pg.photos.yahoo.com/ph/russjohnson/album?.dir=/1cabre2&.src=ph&.tok=p
hx2sRFBaYcBoHDP
<Blurry... looks somewhat like an ascidian to me...>
I also have a question about glass anemones. Some of the postings seem
to indicate that they appear and disappear. They are not (very) mobile,
right?
<Correct>
The reason I ask is that I have what, until I
started trying to ID this attached anemone, I had what I thought were
tiny jellyfish or some other hydroid on the front of the tank.
<Might be>
I'm still rather certain that that's what these are,
because they dart around the tank with incredible speed, an they looked
just like the photos of the hydromedusae, Staurocladia oahuensis.
Thanks a million!!
Rusty
<... They're this mobile? Than not
anemones or ascidians. Please send along clearer, larger resolved
image/s. Bob Fenner> Re: Anemone ID... No, but...
8/3/06
No, the little buggers scooting around the tank were a
completely different organism, which I identified as probably a
"Staurocladia oahuensis",
obviously, not a Cnidarian nor an
Anemone. You confirmed that they could not be glass anemones for me as
they were much too mobile.
<Ah, yes... sorry for the confusion.
Have/had just come in from a red-eye flight from HI... should stay off
the Net till rested>
I re-read your email a couple times, and I
wasn't clear if you were asking ME to define "pest" or "weed".
Is it
a correct assumption that you are saying this organism is a pest
organism?
<Mmm, no... trying to make a point, and yes to asking...
about what constitutes such... i.e. what is a pest/weed?>
If so,
could you recommend how to get rid of them? In my FOWLR tank, I picked
up a Peppermint shrimp, which seemed to help along with increased flow
and Kalkwasser additions. This is a Reef tank, so I'm not sure that I
want to toss a Peppermint Shrimp in there, because in my (now) FOWLR
tank, the Peppermint shrimp ate my mushroom
corals.
Anyway, if
you think the organisms in the photos are detrimental, could you give me
some pointers in getting rid of them? Physical removal isn't realistic.
Thanks again,
Rusty
<Mmm, please read here:
http://www.wetwebmedia.com/ca/cav1i3/aiptasia_impressions/aiptaisia_impressions.htm
and the linked files at bottom... About the same tech. Bob Fenner, still
sleepy, slow and fuzzy>
Sponges and tunicates... UnID-able invertebrates 7/22/06
Hello, I have been debating if I should send these photos or not but
as you can see.... I am wondering about this bright yellow sponge
looking creature. It has many fiber looking parts all of which
spontaneously began growing on a piece of LR with a glove polyp
(healthy and growing). Also, there have been these strange clear,
spiral-shaped egg sacs being deposited every night on the same glove
polyp colony--what is this from?
<Likely a mollusk of some
sort...>
No QT for this one specimen, I was soo excited :-( .
Anyway I have also included a photo of a tunicate which is very
cool!! Do you know what kind it is? The tunicate has an orange body
with white rimmed openings.
<Mmm, can barely make out this
solitary animal...>
Ok, next question is about a set of openings
in my live rock. They are almost perfectly round and each opening
looks like a pair of conjoined circles, out of these often comes
some sort of light, touch, current sensitive pink creature with
small black marks around each of its openings along with small cilia
looking protrusions circumfronting each of the two openings. I have
two of these and they come out often just to the edge of the LR
opening--what are they?
<Can't tell from this description>
Next, in the same piece of LR I have something with 8 white tentacle
looking arms (each one looks like a succession of lambda signs) when
this creature is out it is constantly bringing one arm at a time
back into the live rock as if to feed whatever is at the end of
those strange arms. HELP!! Thank you for your time, REALLY!!
<All sound neat... would enjoy them... as it seems you are! Cheers,
Bob Fenner> |  
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