It's absolutely obnoxious and I've lost all the "awww and hahahah and cuteeee" sentiment. Now it just pisses me off while I'm trying to delicately remove algae from frags and coral. Some one I know that worked at an lfs I frequented a while back told me to, after telling him about my reef tank.. "get the clowns out asap, they're dicks" he was right!