The a-pacu-lypse is upon us. As if US waterways weren’t teeming with enough invasive fish of late, a Texas angler caught a South American piranha relative with “human teeth” at a local lake on Sunday.

A young boy fishing at Lake Meredith National Recreation Area brought in an unusual catch this week: a South American freshwater fish that is a relative of the piranha. The pacu fish was caught at the ...

A new species of piranha-like fish called pacu was recently found hiding in plain sight among several near-identical species in the Amazon River. Researchers have named it after Sauron from "The Lord ...

Pacu mainly feed on plant material and also like to munch on seeds and nuts, which is why they have teeth that "look similar to human teeth," according to the museum. Staff believe the fish was ...