My juvenile angel won't eat. He's small - about nickel size. He's hanging at the surface in the corner of the tank about 50% of the time. He seems interested in food and will "come a runnin" when he sees me approach the tank. He follows the food but doesn't eat. I've tried flake food, frozen shrimp and dried worms -- no luck. I'm considering placing him in a breeding net with food but I don't want to stress him further. My tank parameters are: Ammonia = 0, Nitrates = 0, Temp = 78F. I'm adding salt and currently have 15 tsp in a 29 gal tank. Any suggestions?