My Copperbanded Butterfly fish, had him for two weeks now, in those two weeks he has completly demolished a few dozen aptasia. Which makes him pretty awesome to me haha! Before I bought him from Ypsi FD I made sure he was eating, Dillon there fed him some PE Mysis which he ate readily. He is still eating PE Mysis, but also enjoys Live brine gutloaded with Selcon, Frozen Brine, and LOVES selcon soaked baby clams on the half shell. He is a very very pretty fish that I have fallen in love with, and has yet to do anything to make me belive that isn't reef safe.. but ya never know..
Here is a video I made of him eating Aptasia's like there candy.. he demolished them all out of the tank before I could get a good video, so I had to 'borrow' some small pieces of LR from the Pico tank to get a good vid of him eating them :D