Good or bad starfish id

[z28cam]

Just spotted this guy while looking at a rock in the tank. Is it a pest or benificial star? I seem to think it might be an asterina star but not sure.

 

[ReeferBill]

I do not think that star is reef safe.

 

[Calappidae]

Asterina, hit or miss on being reef safe, usually harmless.. but also capable of multiplying.

 

[Betta132]

That's definitely an asterina. They tend to be nipped at and asymetrical, like this one is. They can multiply out of control if given too much food, but they're usually harmless to corals.