1.My goldfish (had him for 13 months) sometimes while resting sometimes balances on his head at the side of the tank. Does this indicate something is wrong? He isnt injured and swims fine so it isnt swim bladder. 2. Does anyone know if goldfish can get lonely? (might be a stupid question). As he has been on his own for a month now but will be buying another fish soon as long as my fish is okay. Thanks for any replies