do i want this creature in my sump?

This is in my sump live rock. I know this is a bad picture, it was the best i could get, looks like a small sea star to me? is this a nuisance star? Should i remove?

 

when i doubt ditch it

 

There is not image, but it sounds like it's either a Asterina (most likely harmless but could be one of the rare zoanthid or coral eaters) or a Mini Brittle star which is harmless.

 

sorry i got the image up now

 

here are some better pics

 

Asterina!

They reproduce by lateral fission, hence the reason people find them with partial bodies and central disk.

Hundreds of different types, no dealing for sure what type you have. Population explosions are the most common problem.

 

thanks for the info

 

You're welcome. ;-)

 

I wouldn't kill it unless you know it is doing harm. Most are harmless in my opinion.

 

your nutrients go up, these seem to proliferate. you keep your nutrients low, parameters good and they seem to stay in check.

at least what i have seen.