Hi, thanks for the info. His body or legs are not swollen so I don't think it's bloat. This may sound crazy but it's like if he doesn't concentrate on what he is doing he has the swim problem (I don't know if they have that kind of capability), and other times he is just fine and has control. Strange little creature . He didn't come from an ideal situation, he belonged to my young neice and she didn't take very good care of him (small tank, dirty water, food left in, not good). She had him for 3 1/2 years and then didn't want him anymore so I adopted him. I'll try to download some pictures.