I know its not a monster fish, but I just recently purchased some cory's for my small tank. Had them in there for about 3 days now. One of the albinos has been swimming in tight circles for the past day and a half. It acts like it can't see where its going. It still eats rests on the bottom, but when it's swimming its in tight circles until it bumps into something then the circles change direction or get bigger. Anyone have any ideas?