I bought him 4 days ago at a pet store an hour away from my house for $100 he threw up all the fish the store gave him tht night on the way home and never ate sense. today i cleaned out the tank and he was very active. with in the past few hours he has been laying on the bottem not even moving when other fish bumb and nuge him. I have put live and frozen food in and he still wont eat. PLEASE HELP!!!