Hi I need help with my red tail payara he is about eight in now has been just weaned off live food eating tilapia I come home the other night and he's acting really skittish all the sudden and swims around the tank with his mouth touching the bottom of the tank whenever I go near it or drop food in or he gets spooked he has never been like this for the year that I've had him and now he just has a blank stare in his eyes did he bumped his head and is recuperating I've never had this happen before