My Coral Beauty is acting very strange this morning. He just swims in a circle back and forth. Is he dying? What can I do to save him? He is in a 75gal FOWLR tank with 5 other fish. 3 common clowns, 1 yellow tang and a yellowtail damsel. They all have been living together for quite long time. I feed them once a day and today I couldn't find him at first because he usually acts really shy and won't come to me when I feed like the tang and clowns do. They eat from my hand and he takes whats left but I try to break it up so the tang and clowns get it all. Are CB's that timid or is something else the problem. It hasn't been that long since I had the water checked out by my LFS with nothing but the hardness off a little. I change water once a week too. What can I do to save him?