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. The fish, dubbed a pacu ...

Piranhas belong to a family of bony fish characterized by highly developed dentition. They’re cousins to the pacu fish, which has dentition eerily similar to human teeth. Unlike pacu teeth, which are ...

Unlike the jagged, sharp teeth of their piranha relatives, pacu “have teeth that look similar to human teeth,” officials said. Texas Parks and Wildlife officials said in 2012 a nearly 8-pound ...