my copperband has been a model citizen...he used to be really shy and would hide anytime someone walked into the room, but now he is out in the open quite a bit and hasn't messed with any of my corals. I have had him for about 6 months and not once has he eaten prepared food. It eats aptasia and I am guessing it gets a meal out of clownfish fry every 2-3 weeks when they hatch.