White small star fish

[Dirkcnw]

Hi, my tank got a few of these white star fish, are the beneficial for the tank or will they create some problems on my rocks.

 

[Reefer238]

No they good clean up crew, won't cause problems

 

[gaboon]

Asterina starfish, multiply rapidly and some eat corals

 

[JpPaulKruger]

Harmless at first. But when they get a lot, and they multiply quick, they will start to eat corals. Like Zos

 

[Dirkcnw]

Thank you, what will be the best way to keep it in check