Think I found a jelly in my fuge

[ledford1]

Does anyone know of a site where I could try to ID a type of jelly?

I was cleaning the macro out of my fuge when I noticed a small creature floating just below the water's surface. With the pumps off, the water was still, but then this little guy began pulsing and swimming around.

It was a brown, disc-like creature with a very short fringe around his body, and it's size was slightly smaller than the diameter of a pencil eraser. I tried to get a photo and a video on my little PowerShot, but it was impossible to get a good focus - it always came out as a brown smudge on the camera. I even scooped him up with a cup and tried to get a decent photo, but this pocket camera can't focus for anything in the water.

In the cup, he'd pulse around for awhile then stop and just float. Then, I'd stir the water a bit, and he'd begin pulsing around again. He was amazing to watch. Unable to get a photo, I returned him to the fuge.

I'm guessing it's some type of jelly, but have never run across anything like it before. Are there any other possibilities? I'd like to figure out exactly what I found. If there's a site, similar to what Melev has with the photo IDs, that'd be great.

 

[GBE378]

I had several of those in my old 29. But I think they were the medusa stage of the pale anemone. Since about 4 days later I found several new polyps on my rocks and glass. But I am no expert so I could be wrong.

 

[ledford1]

<a href=showthread.php?s=&postid=12214697#post12214697 target=_blank>Originally posted</a> by GBE378
I had several of those in my old 29. But I think they were the medusa stage of the pale anemone. Since about 4 days later I found several new polyps on my rocks and glass. But I am no expert so I could be wrong.

Hmmm... perhaps that's what it was then.

 

[kade427]

i had a bit of a problem with these in my 12gal

 

[tanyashankles]

I found four of them just this morning for the first time, in my 100g display... I was wondering the same thing, where they came from and what the heck they are... They swim just like jellies, and at the same time my nassirius snail laid eggs (at least 200) on the front glass. So I had a bunch of new life in my aquarium this morning out of nowhere... If you find out what these jelly things are please let me know!

 

[maxheadroom]

 

[GS-Rock]

sea squarts are they in the shape of a pinapple?

 

[tanyashankles]

no I have sea squirts too, which are ugly btw, but these are little brown jellyfish. They are disc-shaped, and pulse up and down all over the place just like a jelly, and they are brownish. I can only think that they are possibly babies, aka 'sea lice' and hitchhiked on macro. They didnt last long, I havent seen one in a few days. They kept getting swept around the tank until they probably got taken in by the skimmer...

 

[vyvial]

sounds like what some called floating hydroids that i saw in a macro tank

 

[Chibils]

They're hydroids.