Is he sick

Question
I apologize if this question has already been asked but I have a albino algea eater that I have had for a few months now, I think something is wrong with him he lays on his back in the water upside down and just floats, I thought he was dead and when I went to pull him out of his tank he turned over and swam away fast. He keeps playing dead but I see him sucking on the walls like a normal algea eater should. Is he sick?

Answer
Hello. No this question hasn't been asked. Hmm well it sounds like he could have swim bladder disorder makeing him off balance although i am not absolutley sure. Normally that kind of swimm bladder is caused by an advanced illness. Has there been any other strange activities before he started turning upside down?
Corinna