On a trip to PetSmart yesterday to get a new goldfish for my son Jack, I was dismayed to find a tank filled with Pacu. I know most of you just went "huh?" Most pet stores bill Pacu as "vegetarian Piranha," but the truth is this little fish can be even deadlier than its Piranha cousin.
Pacu are mainly found in South America, and it was believed that this species were herbivores. That belief was incorrect. Even though Pacu don't have a mouth full of razor-sharp teeth like Piranha, they do have teeth (that resemble human teeth) and they are omnivorous.