Please ID?

[Bigtex817]

please help me ID and if good or bad. To me it looks like a star fish. Sorry for the pic quality it’s from my phone.

 

[3mm3]

https://reefbuilders.com/2016/03/30...duction-to-this-common-reef-aquarium-critter/

Asterina starfish

 

[Palyzoa]

Asterina Star fish. Some types are rumored to eat coral... I have some in my tank and they don't seem to bother anything, so far as I can tell... They can multiply quickly so keep an eye on them. I manually remove them when I notice populations getting out of control.