Piranhas are indigenous to the Amazon basin, in the Orinoco, in rivers of the Guianas, in the Paraguay – Paraná, and the São Francisco River systems, but there are major differences in the species richness.

Nov 21, 2025 · Piranhas range from northern Argentina to Colombia, but they are most diverse in the Amazon River, where 20 different species are found. The most infamous is the red-bellied piranha …

Apr 8, 2025 · Take piranha fish, a toothy South American freshwater fish that has been the subject of not one, not two, but five Hollywood horror movies. Sure, they've got big teeth, but are piranhas really as …

Aug 7, 2025 · Piranhas are fairly small, usually under two feet, and typically travel in groups called shoals. Piranha is the common name used to refer to any of potentially over 60 species of freshwater …

Jun 12, 2025 · While piranhas can be dangerous, attacks are rare and usually provoked. Understanding and respecting their habitat reduces risks and allows harmonious coexistence.

Piranhas are a group of freshwater fish belonging to the family Serrasalmidae, which also includes pacu and silver dollars. They are native to the rivers, lakes, and floodplains of South America.

There are several dozen species of piranha. These creatures have lived in South America for nearly 2 million years – and their ancestors are thought to have inhabited South America rivers for as much …

Physical Description Red-bellied piranhas are red on their undersides from chin and cheeks to belly. The head and body are various shades of gray; their sides are flecked with bright silver scales. The …

4 days ago · What looked empty from the surface was packed with life below. This video shows hundreds of juvenile pacu and piranha-like fish schooling together and explains how invasive …

Renowned for their razor-sharp teeth and reputation for frenzied feeding, these fish have captured the imagination and instilled a sense of primal fear. This complex and ecologically significant predator is …