mharris, I've had my copperband for over 3 years now and I don't know of any trick to keeping them. You find that some will eat aiptasia{mine won't touch them}, and some do good for a short time and then go into recession. Mine has even been so sick for me to consider taking the fish out of the tank to euthanize. This happened and then the fish began to eat PE brand mysis shrimp again and is now back to it's former self. Fat, sassy and allows me to pet it while I'm working in the tank.

I think a lot of the future health of these fish depend on how the fish is collected, shipped and then acclimated to our LFS's. How long the fish might be in the store and whether the store actively is trying to get the fish to eat or just sell it befire it dies on them.