I would like to put some sort of clean up crew in my tank. The problem is that I have a Niger Trigger that I know loves to snack on snails, crabs, shrimp and such. Sure enough took care of my emeralds that I have not seen since I put him in the tank. Is there such a thing as a safe cleanup crew for my fish?? 1 Coral Beauty, 1 Niger Trigger, 1 Gold Banded Maroon Clown and 3 Staghorn Damsels. Plus one Brittle Starfish that I plan on getting out of there asap due to stories I have heard.