The Auñ Pana are evil man-eating fish from the folklore of the Yanomami of Brazil and Venezuela. They are large, have arms, and are covered with hair. Apparently they also have some degree of magical power. The auñ pana live in deep water and school with Pehiwetinome, which are equally large and anthropophagous.
A group of auñ pana and pehiwetinome once tore down a bridge that the Yanomami were crossing by biting through its wood. The bridge collapsed and became a raft, and the surviving Yanomami were turned into monkeys and pigs.
Albert, B.; Becher, H.; Borgman, D. M.; Cocco, L.; Colchester, M. E. M.; Finkers, J.; Knobloch, F.; Lizot, J.; and Wilbert, J.; Wilbert, J. and Simoneau, K. eds. (1990) Folk Literature of the Yanomami Indians. UCLA Latin American Center Publications, University of California, Los Angeles.