Xeno, I think you have a point. My neon goby that was wild caught, cleans the fish. The tank raised one does not, even though the it watches the wild caught one clean. Very interesting. Like clowns. My friends clowns, tank raised, showed no interest in coral or anemones. She traded for wild ones and they love their adopted soft coral just as mine do. However, the improper standards to which many fish we love are captrured makes ones hair stand on end and deters me from getting anything unless I know it was fairly and safely caught. Oh, also, my cleaner shrimp do clean but only when the tank has not been fed. When the food is easier to get they don't clean the fish.