Little neon green starfish?

[CoralReeForrest]

Anyone know what this guy is or whether he's a good guy or bad guy?

 

[Betta132]

Has it moved at all? It might be some sort of a short-stalked polyp...

 

[CoralReeForrest]

Yeah there is a few of them and they move around a bit, was kalk pasting the rock earlier and he scurried into his hole and came back out after I put the rock back in the tank

 

[CoralReeForrest]

Has it moved at all? It might be some sort of a short-stalked polyp...

Hmmm now that I sat and watched them more maybe you're right? There's a larger one on the other side of the rock and I saw it retract and them kind of come back out and extend a bunch. They just sit right on the rock. Hmmm.

 

[Betta132]

It just looks really weird for a starfish... Carefully put some food on it. If it curls around the food, it's a polyp.
Not sure what kind of polyp, though... What color is it under white lights?

 

[CoralReeForrest]

Still bright green under whites.

 

[Calappidae]

Could be a hydroid, anemone, polyp stage of jellyfish , aiptasia which is more likely.. or possibily even a coral but I doubt that. I don't see any legs or flatten bodies for brittle stars.. also brittle stars have 5 legs.. sometimes 6.

Colonel hydroids

Polyp stage of jellyfish

Aiptasia

Microbrittle

There is no flourecent starfish, it could be a button polyp or even something else.

 

[CoralReeForrest]

Huh. Well I don't see them being an issue so will just see how they progress !