Chaca Chaca

Rasmus, our preeminent biologist, directed me to this prize. Catfish are never attractive. But the chaca chaca deserves a place on the winners' podium for ugliest catfish.

A word to the wise: these denizens from the Orient (India, Nepal, Bangladesh, etc.) make for dangerous aquarium fish. They are capable of excreting a substance that can drop the tank's pH dramatically - and kill the other occupants in the process. See, looks can kill.