Do Jellys clean glass?

[amc78cj7]

My wife noticed this clear jelly looking thing about 1/2 cm in length tracking along the back of our tank tonight. You can see track marks where he's gone up and down the glass cleaning it. While I couldn't see any tenticles, it reminded me a lot of this guy (Not actual photo, I know this photo is of a comb jelly) having two extensions off this butt:



What might it be? A Jelly? Sorry, but he is so small and transparent that I'm sure I can't get a photo. He does look like clear pflemn though, with shape....

[Dentoid]

Could be a stomatella snail. They're somewhat clearish, come out at night and you can't see their shell.

[charlesr1958]

Hard to say without a good photo of the actual animal involved.

Chuck

[naperenterprise]

Maybe a nudibranch of some sort?

[fulinn]

Hi
I also had a little clear jelly fish like thing in my sump. I was excited to find something new, then it got ID'd for me and it was a flatworm !!

check this link about 1/2 way down to see if he's the same critter:
FlatwrmFAQ3

Mine feeds on copepods, which I need to feed my mandrin so I remove them when I see them, but I'm told they don't really do any harm, I guess.

Bonnie

[Witfull]

Please, what is growing in my tank......

[amc78cj7]

Originally Posted by fulinn

Hi
I also had a little clear jelly fish like thing in my sump. I was excited to find something new, then it got ID'd for me and it was a flatworm !!

check this link about 1/2 way down to see if he's the same critter:
FlatwrmFAQ3

Mine feeds on copepods, which I need to feed my mandrin so I remove them when I see them, but I'm told they don't really do any harm, I guess.

Bonnie

Thanks. This was the guy, listed as a flat worm on that site. It says they don't do much harm though, right?:

Flatworms
Amphiscolops


Now I've gotten rid of my gorilla crab, the comb jellys, the aptasia anemones. Tank is almost ready for corals.

[Witfull]

Originally Posted by Boomer

They are Ctenophorians, Comb Jelly fish, Comb Jellies or Sea Gooseberries and these are of a unique group/family known as Coeloplanidae. If you look at all those images you will see a similarity. A "Nose" or two nose like structure with a tentacle coming out. These are the benthic Comb Jellies and are usually attached to "something". If you look realllly close you will see the " Comb's " (like a hair comb, hence the name) in all of them. Every once in awhile they pop-up in a reef tank. I have ID them an number of times on other forums an NG. They can be a problem if the population density gets to high and interfere with corals. These typies of Comb Jellies are know as Platyctenean, coeloplanidids are often found on the surfaces of specific plants or animals. Many are Lyrocteis flavopallidus or simialr species.

Lyrocteis flavopallidus