My copper banded butterfly fish is a very good eater. He completely wiped out my apista population and has been eating brine shrimp since. I have been trying to offer him other foods, but he os not interested. I have tried blood worms, mysiss shrimp, clams, and dried food soaked in garlic liquid. Everyone else in the tank is happy to eat whatever. When I feed with anything other than brine shrimp he just ignors it, even if he hasn't eatin in days. Any suggestions?