Aye, there’s the rub! A mixed reef can be so frustrating when everything doesn’t cooperate. I still have to occasionally remind my cleaner shrimp that the Goni is NOT his own personal buffet. He taunts me by hiding directly underneath it all day, then as soon as it’s lights out he pounces...but does at least leave it alone now when the lights are on. Mostly. My clowns learned much faster, I think it’s because they have much better eyesight and knew what was happening. Try just scaring them away from it whenever you catch them in the act.