Hello, I'm new to fish keeping and bought some rasbora and cardinals. One of the rasbora developed a bump on it's right side and seems to turn it's tail only to the right when it swims. It has no problem going from the top to the bottom of the tank when feeding but tends to remain in one spot when not. Also he tends to seem a little more plump than the others. I tried to research this but as I said, I'm new to this. Can anyone help me?
