''Atlantirivulus'' 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 n ...

of fishes in the

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

Rivulidae. They are

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern

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 ...

, ranging from

Rio de Janeiro Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the Rio de Janeiro (state), state of the same name, Brazil's List of Brazilian states by population, third-most populous state, and the List of largest citi ...

to Santa Catarina.Costa, W.J.E.M. (2014)
Four new species of the genus ''Atlantirivulus'' (Cyprinodontiformes: Rivulidae) from the Brazilian Atlantic Forest.
''Vertebrate Zoology, 64 (1): 9–21.'' Several of the species are highly threatened, while others survive in well-protected reserves. ''A. janeiroensis'' was initially feared extinct, but has since been rediscovered in two reserves. Similar to closely related genera such as ''

Anablepsoides ''Anablepsoides'' is a genus of killifish in the family Rivulidae native to tropical South America and the Lesser Antilles. The majority are from the Amazon and Orinoco basins, as well as freshwater systems in the Guiana Shield, but a few spe ...

'', ''

Cynodonichthys ''Cynodonichthys'' is a genus of freshwater killifish in the family Rivulidae. They are found in Middle America, ranging from southern Mexico (north to Oaxaca and the Yucatán Peninsula), through Central America (where most species live), to ...

'', ''

Laimosemion ''Laimosemion'' is a genus of fish in the family Rivulidae from the Amazon basin and basins in the Guiana Shield in tropical South America. They mostly inhabit small streams, creeks, swamps and pools in lowlands, but locally occur to an altitud ...

'' and ''

Melanorivulus ''Melanorivulus'' is a genus of South American freshwater fish in the family Rivulidae. Most species are endemic to the Río de la Plata, eastern Amazon (west to Tapajós basin), Tocantins– Araguaia and São Francisco basins in Brazil, but ...

'', ''Atlantirivulus'' are non-annual killifish. They are small fish, no more than in total length. Compared to many species in the family, the colors of ''Atlantirivulus'' are relatively dull.

Species

Until 2011, ''Atlantirivulus'' were included in '' Rivulus'', and some prefer to maintain them in that genus. If recognized as a valid genus, there are currently 15 species in ''Atlantirivulus'': * ''

Atlantirivulus depressus ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' W. J. E. M. Costa, 1991 * ''

Atlantirivulus guanabarensis ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' W. J. E. M. Costa, 2014 * ''

Atlantirivulus haraldsiolii ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' Berkenkamp, 1984 * ''

Atlantirivulus janeiroensis ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' W. J. E. M. Costa, 1991 * ''

Atlantirivulus jurubatibensis ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' W. J. E. M. Costa, 2008 * ''

Atlantirivulus lazzarotoi ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' W. J. E. M. Costa, 2007 * ''

Atlantirivulus luelingi ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

Seegers Seegers is a patronymic surname. Notable persons with that name include: * Doug Seegers, American guitarist and songwriter * Rainer Seegers (born 1952), German percussionist and timpanist * Wendy Seegers (born 1976), South African athlete * Willi ...

, 1984 * ''

Atlantirivulus maricensis ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' W. J. E. M. Costa, 2014 * ''

Atlantirivulus nudiventris ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' W. J. E. M. Costa & G. C. Brasil, 1991 * ''

Atlantirivulus paranaguensis ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' W. J. E. M. Costa, 2014 * ''

Atlantirivulus ribeirensis ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' W. J. E. M. Costa, 2014 * ''

Atlantirivulus riograndensis ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (2014)Fou ...

'' W. J. E. M. Costa & Lanés, 2009 * ''

Atlantirivulus santensis ''Atlantirivulus'' is a genus of fishes in the family Rivulidae. They are endemic to shallow swamps, creeks, streams and pools in the Atlantic Forest in southeastern Brazil, ranging from Rio de Janeiro to Santa Catarina.Costa, W.J.E.M. (20 ...

'' Köhler, 1906 * '' Atlantirivulus simplicis'' W. J. E. M. Costa, 2004 * '' Atlantirivulus unaensis'' W. J. E. M. Costa &

De Luca DeLuca, also spelled Deluca or De Luca, is an Italian-language surname. People with the surname include: People * Adrian Deluca (born 1982), former Australian rules footballer * Alby De Luca (1908–1978), Australian rules footballer * Anthony ...

, 2009

References

Rivulidae Freshwater fish genera {{Cyprinodontiformes-stub