This fish species with strange human-like teeth is called Pacu. It is found in South America and dwells in freshwater of the streams and small rivers of the Amazon and Orinoco river basins of Amazonia. Pacu fish were also artificially introduced in Papua New Guinea to develop local fishing. Pacu have food habits different from piranha's, but they belong to the meat-eating piranha group. Piranha feed mostly on meet and are carnivorous, while pacu are omnivorous and often prefer plants to meat. They also have different teeth structure. Their teeth resemble human's teeth: they are square and straight.

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