Tiny starfish harmless or pest?

[Bettacrazy]

I have these tiny white starfish all over my tank. So are they a pest? Because I like them and would like to keep them in the tank.

 

[carey]

They will be fine. they are harmless

 

[mfdrookie516]

Are they starfish? I have seen asterina stars in my tank, which everything leads to the 'they'll most likely not cause an issue, but some people say they have eaten their coral'... but I recently found, what I thought until last night to be, tiny star fish on my glass that were barely visible. Come to find out, they're hydroids

 

[mr_X]

I wouldn't worry about either one.

 

[zambono]

Harmless