ok, i have 5 bettas, and one of them named oliver, hasnt be seen eating in the 5 months we've had him. (we still drop in pellets, however) lately, ive noticed little pieces of tail on the bottom of the tank, and a little of his tail in almost chipped in a way. i suspect he is nipping at it. i have tried about 4 foods with him, 1 of them he actually bite it, but then spit it out. can any1 help. i really dont want to enthuisize him, and im looking to any suggestions that seem logical. thanks.