''Pseudoxiphophorus'' 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 fish from the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Poeciliidae 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 ...

. The species in the genus were formerly considered to be in the genus ''

Heterandria ''Heterandria'' is a genus of livebearing fishes within the family Poeciliidae. Most species occur in Guatemala and its surroundings, particularly Mexico, but the midget livebearer ('' H. formosa'') comes from the southeastern United States ...

'' but workers found that most of the species were not closely related to the

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

of that genus, ''

Heterandria formosa ''Heterandria formosa'' (known as the least killifish, dwarf topminnow, mosqu or midget livebearer) is a species of livebearing fish within the family Poeciliidae. This is the same family that includes familiar aquarium fishes such as guppies and ...

'', and seven species were transferred to the genus ''Pseudoxiphophorus''. They are found in Central America.

Species

The following seven species are classified as belonging to the genus: *'' Pseudoxiphophorus anzuetoi'' (

Rosen Rosen is a surname of Ashkenazi Jewish origin, the name deriving from the German word for roses. Notable people with this surname include: People A–H * Adam Rosen (born 1984), American-born British luger Olympian * Al Rosen (1924–2015), Ameri ...

& Bailey 1979) *''

Pseudoxiphophorus bimaculatus ''Pseudoxiphophorus'' is a genus of fish from the family Poeciliidae. The species in the genus were formerly considered to be in the genus ''Heterandria'' but workers found that most of the species were not closely related to the type species of ...

'' (Heckel 1848)-(Twospot livebearer) *''

Pseudoxiphophorus cataractae ''Pseudoxiphophorus'' is a genus of fish from the family Poeciliidae. The species in the genus were formerly considered to be in the genus ''Heterandria'' but workers found that most of the species were not closely related to the type species of ...

'' (Rosen 1979) *''

Pseudoxiphophorus diremptus ''Pseudoxiphophorus'' is a genus of fish from the family Poeciliidae. The species in the genus were formerly considered to be in the genus ''Heterandria'' but workers found that most of the species were not closely related to the type species of ...

'' (Rosen 1979) *''

Pseudoxiphophorus jonesii ''Pseudoxiphophorus'' is a genus of fish from the family Poeciliidae. The species in the genus were formerly considered to be in the genus ''Heterandria'' but workers found that most of the species were not closely related to the type species of ...

'' ( Günther 1874) - (Barred killifish) *''

Pseudoxiphophorus litoperas ''Pseudoxiphophorus'' is a genus of fish from the family Poeciliidae. The species in the genus were formerly considered to be in the genus ''Heterandria'' but workers found that most of the species were not closely related to the type species of ...

'' (Rosen & Bailey 1979) *''

Pseudoxiphophorus obliquus ''Pseudoxiphophorus'' is a genus of fish from the family Poeciliidae. The species in the genus were formerly considered to be in the genus ''Heterandria'' but workers found that most of the species were not closely related to the type species of ...

'' (Rosen 1979)

References

Poeciliidae {{Cyprinodontiformes-stub