So these stars were once a peaceful part of my cleanup crew, but no more. I need to kill them all because they're eating my zoas. I thought about a pair of harlequin shrimp, but this isn't an option. I already have two pistol shrimp, one peppermint, one cleaner, and one coral banded all in my display tank. Am I doomed to manual removal of these guys? That's a lot of putting my hands in the tank... something I save for a last resort.