''Phalloptychus'' 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 ...

poeciliid The Poeciliidae are a family of freshwater fishes of the order Cyprinodontiformes, the tooth-carps, and include well-known live-bearing aquarium fish, such as the guppy, molly, platy, and swordtail. The original distribution of the family was t ...

s native to eastern and southern

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

, northern

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

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 ...

and

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 ...

. The Maximum length for a male is around 2.5cm, while females are around 3.5-4cm at maximum length

Species

There are currently two recognized species in this genus: * ''

Phalloptychus eigenmanni ''Phalloptychus'' is a genus of poeciliids native to eastern and southern Brazil, northern Argentina, Paraguay and Uruguay. The Maximum length for a male is around 2.5cm, while females are around 3.5-4cm at maximum length Species There are curre ...

Henn Henn is a both a surname and an Estonian masculine given name. Notable people with the surname include: ;As a given name: * Henn-Ants Kurg (1898–1943), Estonian military colonel and diplomat * Henn Pärn (born 1941), Estonian politician * ...

, 1916 * ''

Phalloptychus januarius ''Phalloptychus'' is a genus of poeciliids native to eastern and southern Brazil, northern Argentina, Paraguay and Uruguay. The Maximum length for a male is around 2.5cm, while females are around 3.5-4cm at maximum length Species There are curre ...

'' ( R. F. Hensel, 1868)

References

Poeciliidae Fish of South America Freshwater fish genera Taxa named by Carl H. Eigenmann Ray-finned fish genera {{Cyprinodontiformes-stub