Chocolate chip stars
 

How big of a polyp can they be a risk to? I imagine small corallimorphs will be chocolate chip food, but can they pose a risk to larger monstrosity-sized polyps/mushrooms? For example, how about a plague of 4"-6" sized purple mushrooms that are pretty much devastating what used to be a nice reef tank?

I am thinking of a plague of much smaller proportions called Green Star Polyps. Would one of those guys eat those? They are now growing in small patches on my rocks and glass.

Tony,
For the time that I had my Chocolate chip star is did nothing but clean the sand bed. After a few months it then started on the corals...well only the yellow polyps. It wouldnt touch anything else. It might have though if I would have let it eat all my yellow polyps.