Chocolate Chip Star?

[Coral Commander]

This is the best picture I can come up with. I suspect that it may be a Chocolate Chip Star. This little guy is probably in the area of about 3 to 4mm in diameter.

 

[Bifferwine]

That looks to be an asterina star. Some people say they eat corals, others say they only eat algae... It's up to you if you want to keep it!

 

[Coral Commander]

I think I will wait until it gets larger so that I can perhaps better identify it. The picture I showed you is about as good as I can get.

 

[BL1]

If it's an asterina it won't get any bigger, only multiply.

 

[ErinCahir]

I think it's an asterina, too.
Some people pull them out because they can reproduce pretty quickly (and become a nuisance).
I have a dozen or so in my tank (that I've seen). I've never had a problem with them.