Need id on this starfish

[Budman's Corals]

Good, bad, anyone

 

[Budman's Corals]

Hes abiut half dollar size

 

[CoralHut]

Asterina starfish, usually harmless but can grow to plague proportions if nothing predates on them in the tank. Some people also claim certain colored ones are coralivorous. I've personally never seen them eat corals but I have seen them to such a high amount they irritate zoanthids and cause them to close up. Keep an eye on them and if they become a problem Harlequin shrimp will take care of them quickly. I've also seen blue linckia starfish chow down on them as well.