So I'm setting up a new tank soon with two round rays, and a marbled cat shark, and possibly a kole tang or yellow but I'm not worried about that. I was wondering how much of a risk throwing in a few cleaner shrimps would be. I know shrimp make a great snack for sharks and rays but cleaners are known for there symbiotic relationship for cleaning larger fish. Is this still probably still to risky or may they see the cleaner shrimp as cleaners, if well fed and given the shrimp have some rocks to hide in?