Does it seem like he can't control his movement?I have seen fish start swimming weird because of brain damage from hitting the glass/lids. I don't have much experience with disease.I'm sure someone can helpA not so good update. He was lethargic from last 3 days. And he started swimming in circles. His stomach seems flat from two sides. What is it? Is it whirling disease or is it swim bladder issue? He was twitching and twirling and banging the stones in the tank. So I've got him in a small 10 gallon tank and have added Epsom salt. What else is to be done? Thanks.