The fish Pygocentrus piraya, often called the piraya piranha or San Francisco piranha, and sometimes sold as the man-eating piranha, is a large, aggressive piranha from the São Francisco River basin in Brazil. It is one of the largest piranhas, reaching a maximum length of 50 cm in the wild, and is sometimes considered the most beautiful, with ...
The red-bellied piranha, also known as the red piranha (Pygocentrus nattereri), is a species of piranha native to South America, found in the Amazon, Paraguay, Paraná and Essequibo basins, as well as coastal rivers of northeastern Brazil. This fish is locally abundant in its freshwater habitat.
Serrasalmus rhombeus (Redeye Piranha, and see below), is a fish of the piranha family Serrasalmidae found in South America in the Amazon and Orinoco river basins, the north and eastern Guiana Shield rivers, and northeastern Brazilian coastal rivers. Its length is up to 41.5 cm.
Serrasalmus geryi (violet line piranha or Gery's piranha) is a species of fish found in the lower Tocantins and Araguaia Rivers of Brazil. This rare Serrasalmus is the one piranha of the genus Serrasalmus that can coexist with others of the same species (though caution is advised). Gery's Piranha reaches sizes up to 12 inches in length.