Well I got 2 more cory cats and 1 seems to have problems swimming. It seemed fine in the store and the way home with the exception of slightly increased breathing which I figured was from stress. However the fish cannot swim straight, it kinda goes in loop-de-loops. It was lying on its side last night and I though it was gone, in a last ditch attempt I turned the lights off in an attempt to calm the fish down. Sure enough 2 min. later he was up and seemingly okay 8O :? . There are no aspects of disease or anything, he seems fine except for the swimming/resting problem and slightly increased breathing. Is this fish on its way out or is it something like a swim bladder disfunction? Any help is appreciated, ty.