Asterina stars all gone??

[Reef Pilot]

One other thing I noticed in this tank is a lot of the small mini brittle stars. Do they eat asterina stars?

I am wondering too if these mini brittle stars are the reason I can't keep zoas, as I saw them crawling over them too.

The mini brittle stars also hang around my dendros and sun corals, and try to steal the mysis I feed them. My tank is definitely full of them.

Are there any fish or other predators that eat the mini brittle stars?