I had a Betta fish for 3 1/2 years, his name was Swimmy. I knew he was dying because he changed color and just layed on the bottom of the bowl. I waited a few weeks and got another Betta. Also a male, his name is Charlie. I used the same bowl for him, of course I cleaned it out well. I bought him new rocks.
When I first got him, he seemed happy. But lately he just lays at the bottom and does not eat. Sometimes if I go near the tank he gets up and starts swimming in very fast circles almost sticking his head completely out of the bowl. After going around a few times, he goes back to the bottom and lays on his side again. Is there anything I can do for him?