Thank you everyone for responding. Buddy was a bit paler when he was younger. It was so long ago that I can't remember if his spots were more visable then, You can still tell that he has spots in the right light. It is just like a black leapord. you can't see those spots unless the light is just right. My husband chose buddy because he was the only one swimming Up-side-down in the tank. The poor man in the pet store had a hard time catching the one my husband wanted. However, he looks nothing like an upside-down catfish. His mouth is more "mammalian-like" with whiskers all around.
As for his dorsal fin, it is quite large when he pulls it up (ie. when he is upset about something). Most of the time he is very dosile. We once had some Ciclids and the chased him out of his log and bit him on his nose. he was not a happy camper. We had to give them away.
Another thing, the last time I tried to find out what Buddy is, someone mentioned that he could be a nigrita. However, although he looks quite black in this photo, but he is actually a dark brown.
Yes, he is quite pudgy, but he only gets one large algae pellet a day. I guess he needs more excercise. He does occasionally do laps around the tank.
timm