''Paraneetroplus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

of cichlid fish native to moderately to fast-flowing waters in the

Coatzacoalcos Coatzacoalcos () is a major port city in the southern part of the Mexican state of Veracruz, mostly on the western side of the Coatzacoalcos River estuary, on the Bay of Campeche, on the southern Gulf of Mexico coast. The city serves as the municip ...

, Grijalva and

Papaloapan river The Papaloapan River () is one of the main rivers of the Mexican state of Veracruz. Its name comes from the Nahuatl ''papaloapan'' meaning "river of the butterflies". In 1517, Juan de Grijalva's expedition spotted the river, naming it Río de Alva ...

basins in southern

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

. They reach up to in length.

Taxonomy and species

Historically, ''Paraneetroplus'' was included in the genus ''

Cichlasoma ''Cichlasoma'' is a genus of freshwater fish in the cichlid family. The genus was previously very large (a wastebasket taxon), including cichlids from North America, including Central America, and South America. Reclassification and subsequent ...

'' (which is distantly related) and then in ''

Theraps ''Theraps'' is a genus of cichlid fish found in moderately to fast-flowing rivers and streams on the Atlantic slope of southern Mexico and northern Central America. They are medium-sized cichlids. Species and taxonomy Historically, ''Theraps'' w ...

'' (which is relatively closely related). Once ''Paraneetroplus'' was recognized as its own genus, the members of ''

Maskaheros ''Maskaheros'' is a genus of cichlids fish found on Atlantic slope of southern Mexico and Guatemala in the Coatzacoalcos and Usumacinta River The Usumacinta River (; named after the howler monkey) is a river in southeastern Mexico and no ...

'' and '' Vieja'' often were included within it. Today these are generally recognized as three separate but very closely related genera. There are three or four currently recognized species in the genus ''Paraneetroplus'': * '' Paraneetroplus bulleri''

Regan The family name Regan, along with its cognates O'Regan, O Regan, Reagan, and O'Reagan, is an Anglicized form of the Irish surname Ó Riagáin or Ó Ríogáin, from Ua Riagáin. The meaning is likely to have originated in ancient Gaelic ''ri'' ...

, 1905 (Sarabia cichlid) * '' Paraneetroplus gibbiceps'' ( Steindachner, 1864) (Teapa cichlid) * '' Paraneetroplus nebuliferus'' ( Günther, 1860) (Papaloapan cichlid) * '' Paraneetroplus omonti'' Allgayer, 1988 – recognized by

Catalog of Fishes Catalog of Fishes is a comprehensive on-line database and reference work on the scientific names of fish species and genera. It is global in its scope and is hosted by the California Academy of Sciences. It has been compiled and is continuously u ...

, but not by FishBase where considered a synonym of ''P. gibbiceps''

References

Cichlinae Cichlid genera Taxa named by Charles Tate Regan {{Cichlidae-stub