I've got a cleaner, coral banded & fire shrimp in a 90 gallon. Coral banded doesn't usally bother them. The only time he bothers them is when I feed them, it's a war out there!!!
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
It's fun to watch and there is no killing...
Well he did cut off my Arrow crab's leg yesterday at feeding time...