Houston zoo project
Piranhas only exist in nature in South America. And has never been introduced in any other place neither by accident nor deliberate.
The natural ranges of the Piranhas are the Orinoco, the Guyana, the Amazon, the Rio Sao Francisco, the Rio Paraguay and the Rio Parana.
Piranhas are ferocious, freshwater fish that swim in lowland streams, rivers and lakes in South America. They are can grow up to 18 inches long, with bodies that range in color from yellow, green and silvery blue to steel grey, brown and black. Piranhas have a very large lower jaw with razor sharp, triangle-shaped teeth.
They're are also omnivorous animals who eat anything that falls into the water. They eat other fish, snails, turtles, fruit, and other small animals that fall into the water.