Jelly? Hydroid?

[3Watt]

In just over 5 years in the marine side of the hobby I have never seen anything like the 3 beasty's I found in my fuge this evening. I'm thinking they are some type of hydroid. But looking through my library and online I've found images of larval jelly's that resemble these guys.

[video=youtube;9tX-r5PCOC0]http://www.youtube.com/watch?v=9tX-r5PCOC0[/video]

Here's some photo's. Detail isn't that great.

Here's a photo I borrowed from another site. It's not mine but the ID thread it came from was almost unanimous vote for jellyfish.

 

[JackoChang]

Upside down jelly? If so, you're lucky.

 

[3Watt]

I couldn't be so lucky. Something tells me these guys aren't so friendly.

 

[CJO]

Bump!

CJ

 

[mainereefer]

looks like this but I hope not
Irukandji jellyfish - Wikipedia, the free encyclopedia

 

[ScubaJay]

They're not Irukandji, so please don't flush them down the toilet or throw them at your boss when you're having a bad day (kidding, sorta). JackoChang's got it, they're upside down jellies (harmless). They're actually not that uncommon, however, most of us never see them before their swept up in our protien skimmers, or various other filtration devices. They're really cool, but rather difficult to keep in a typical aquarium set-up due to their laid back go-with-the-flow, and consequently into any pumps impeller shaft, attitude. At one of the pet shops I used to work at we would simply put them in a goldfish bowl with an air-stone to circulate the water and a reefing light since these jellies are actually photosynthetic. Cool find 3Watt, hope you're able to give them a good home.