''Pygocentrus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of the

piranha A piranha or piraña (, , or ; or , ) is one of a number of freshwater fish in the family Serrasalmidae, or the subfamily Serrasalminae within the tetra family, Characidae in order Characiformes. These fish inhabit South American rivers, ...

family

Serrasalmidae The Serrasalmidae (serrasalmids) are a family of characiform fishes, recently elevated to family status. It includes more than 90 species. The name means "serrated salmon family", which refers to the serrated keel running along the belly of these ...

. All species are native to tropical and

subtropical The subtropical zones or subtropics are geographical zone, geographical and Köppen climate classification, climate zones to the Northern Hemisphere, north and Southern Hemisphere, south of the tropics. Geographically part of the Geographical z ...

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...

. All the species are predatory, scavengers and may form large schools. The famous

red-bellied piranha The red-bellied piranha, also known as the red piranha (''Pygocentrus nattereri''), is a type of piranha native to South America, found in the Amazon, Paraguay, Paraná and Essequibo basins, as well as coastal rivers of northeastern Brazil.

, ''Pygocentrus nattereri'', is one of four species in the genus.

Species

There are currently four recognized species in this genus: * '' Pygocentrus cariba'' ( Humboldt, 1821) (black spot piranha) –

Orinoco The Orinoco () is one of the longest rivers in South America at . Its drainage basin, sometimes known as the Orinoquia, covers , with 76.3 percent of it in Venezuela and the remainder in Colombia. It is the fourth largest river in the wor ...

river basin. * ''

Pygocentrus nattereri The red-bellied piranha, also known as the red piranha (''Pygocentrus nattereri''), is a type of piranha native to South America, found in the Amazon, Paraguay, Paraná and Essequibo basins, as well as coastal rivers of northeastern Brazil.

'' Kner, 1858 (red piranha, red-bellied piranha) –

Amazon Amazon most often refers to: * Amazons, a tribe of female warriors in Greek mythology * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon River, in South America * Amazon (company), an American multinational technology c ...

Paraguay Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to th ...

- Paraná-

Uruguay Uruguay (; ), officially the Oriental Republic of Uruguay ( es, República Oriental del Uruguay), is a country in South America. It shares borders with Argentina to its west and southwest and Brazil to its north and northeast; while bordering ...

, and

Essequibo Essequibo is the largest traditional region of Guyana but not an administrative region of Guyana today. It may also refer to: * Essequibo River, the largest river in Guyana * Essequibo (colony), a former Dutch colony in what is now Guyana; * Esseq ...

river basins, as well as various river in northeastern Brazil. * '' Pygocentrus palometa'' Valenciennes, 1850 – Orinoco river basin, possibly a

nomen dubium In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium'' it may be impossible to determine whether a s ...

.Reis, R. E., S. O. Kullander and C. J. Ferraris, Jr., editors (2003). Check list of the freshwater fishes of South and Central America. CLOFFSCA. EDIPUCRS, Porto Alegre. 2003: i-xi + 1-729 * ''

Pygocentrus piraya ''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. Description It is one of the largest ...

'' (

G. Cuvier Jean Léopold Nicolas Frédéric, Baron Cuvier (; 23 August 1769 – 13 May 1832), known as Georges Cuvier, was a French naturalist and zoologist, sometimes referred to as the "founding father of paleontology". Cuvier was a major figure in nat ...

, 1819) (San Francisco piranha) –

São Francisco River The São Francisco River (, ) is a large river in Brazil. With a length of , it is the longest river that runs entirely in Brazilian territory, and the fourth longest in South America and overall in Brazil (after the Amazon, the Paraná and t ...

References

* Fink, W. 1993. Revision of the piranha genus ''Pygocentrus'' (Teleostei, Characiformes). ''Copeia'' 3:665-687. * Machado-Allison, A. & W. Fink. 1996. Los peces caribes de Venezuela> diagnosis, claves, aspectos ecológicos y evolutivos. Universidad Central de Venezuela, CDCH, (Colección Monografías)Caracas, 149p. Serrasalmidae Fish of South America Taxa named by Johannes Peter Müller Taxa named by Franz Hermann Troschel {{Characiformes-stub