ID ..Please...?

[dboy999]

Iam assuming this is some sort of baby star of some sort ..i have a sand sifter an a few bristle stars...so i assuming a hitch hicker of sorts..seen him a few times here an there on rock or glass...first time able to take pic..

 

[viper_930]

Do a search on asternia.

 

[spline9]

I agree with viper. Asterina. Its not a baby, they are normally that small.
Shouldnt be a problem in the tank. There are a few different types of this kind of starfish but most, as far as I understand, are peaceful.

 

[nm reef]

There are some folks that swear they are beasts and will munch assorted types of stony corals...I have the same type you've pictured and they have never posed any problems. basically scavengers and not a threat to corals.