My CBB is always on the prowl for food and everysooften will take a nip of my acan (thus it will be sold this weekend) and even rarer, he will take a nip at my welso. but I've also had my purple tang take a nip at my welso. As far as the RBTA, I've not seen anyone but the clowns mess with them. The CBB just dares aiptasia to show it's self and he loves frozen. If only he'd go after my majanos