Balloon fish (mollies, red eye tetras, angel/ram balloon hybrids). I can't imagine those fish have an enjoyable existence. Those fish that have dyes injected into them (same with the frogs).
Common Plecos, Goldfish, Parrot fish, SAE, and painted/tattooed fish!!!!
oh, i should add that most cichlids (angels aside) just look like retarded rednecks to me. they just look like they float around all day saying "duuuuur" and drooling on themselves.