CopperBand Butterfly fish and corals?

To throw in my 2 cents i agree that they are hit & miss but when I had one it didnt bother any of my corals one bit. On the other hand, they can be very picky about eating but when I had mine the LFS showed me it was eating brine and like marine cuisine i think & i had no troubles to get mine eating frozen in my tank at all. It did a wonderful job of control aiptasia as well. I would recommend one but be sure to keep a rountine feeding schedule w/ it may be at least 2-3 times a day. Mine was a hog when it came to eating frozen.