A red-bellied piranha was found in a Louisiana State University lake. Native to South America, the red-bellied piranha can grow to be a foot long and about 4 pounds. The Louisiana Department of ...

In this video, I explore the behavior of pet Red-Bellied Piranhas to determine whether the common depiction of them as aggressive fish is accurate. The video includes a feeding test with various types ...

Piranhas are already feared for their sharp teeth and meat-eating ways, and now a ferocious "bark" can be added to the list. Aggressive red-bellied piranhas produce bark-like sounds to scare off other ...