Atlantirivulus

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Neoteleostei
Infracohors: Eurypterygia
Sectio: Ctenosquamata
Subsectio: Acanthomorphata
Divisio/Superordo: Acanthopterygii
Subdivisio: Percomorphaceae
Series: Ovalentaria
Superordo: Atherinomorphae
Ordo: Cyprinodontiformes
Subordo: Aplocheiloidei

Familia: Rivulidae
Genus: Atlantirivulus
Species: A. depressus – A. guanabarensis – A. haraldsiolii – A. janeiroensis – A. jurubatibensis – A. lazzarotoi – A. luelingi – A. maricensis – A. nudiventris – A. paranaguensis – A. ribeirensis – A. riograndensis – A. santensis – A. simplicis – A. unaensis
Name

Atlantirivulus Costa, 2008

Type species: Rivulus santensis Köhler, 1906
Synonymy

Rivulus (Atlantirivulus) Costa, 2008

References

Costa, W.J.E.M. 2008. Atlantirivulus, a new subgenus of the killifish genus Rivulus from the eastern Brazilian coastal plains (Teleostei: Cyprinodontiformes: Rivulidae). Vertebrate Zoology 58: 45–48. Reference page.
Costa, W.J.E.M. 2011. Phylogenetic position and taxonomic status of Anablepsoides, Atlantirivulus, Cynodonichthys, Laimosemion and Melanorivulus (Cyprinodontiformes: Rivulidae). Ichthyological Exploration of Freshwaters 22(3): 233–249. Abstract (PDF). Reference page.

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.[2][3] 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.[3]

Similar to closely related genera such as Anablepsoides, Cynodonichthys, Laimosemion and Melanorivulus, Atlantirivulus are non-annual killifish.[4]

They are small fish, no more than 6.5 cm (2.6 in) in total length.[5] Compared to many species in the family, the colors of Atlantirivulus are relatively dull.[3]
Species

Until 2011, Atlantirivulus were included in Rivulus,[2] and some prefer to maintain them in that genus.[6]

If recognized as a valid genus, there are currently 15 species in Atlantirivulus:[5]

Atlantirivulus depressus W. J. E. M. Costa, 1991
Atlantirivulus guanabarensis W. J. E. M. Costa, 2014[3]
Atlantirivulus haraldsiolii Berkenkamp, 1984
Atlantirivulus janeiroensis W. J. E. M. Costa, 1991
Atlantirivulus jurubatibensis W. J. E. M. Costa, 2008
Atlantirivulus lazzarotoi W. J. E. M. Costa, 2007
Atlantirivulus luelingi Seegers, 1984
Atlantirivulus maricensis W. J. E. M. Costa, 2014[3]
Atlantirivulus nudiventris W. J. E. M. Costa & G. C. Brasil, 1991
Atlantirivulus paranaguensis W. J. E. M. Costa, 2014[3]
Atlantirivulus ribeirensis W. J. E. M. Costa, 2014[3]
Atlantirivulus riograndensis W. J. E. M. Costa & Lanés, 2009
Atlantirivulus santensis Köhler, 1906
Atlantirivulus simplicis W. J. E. M. Costa, 2004
Atlantirivulus unaensis W. J. E. M. Costa & De Luca, 2009

References

Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Atlantirivulus". Catalog of Fishes. California Academy of Sciences. Retrieved 10 September 2019.
Costa, W.J.E.M. (2011). "Phylogenetic position and taxonomic status of Anablepsoides, Atlantirivulus, Cynodonichthys, Laimosemion and Melanorivulus (Cyprinodontiformes: Rivulidae)". Ichthyological Exploration of Freshwaters. 22 (3): 233–249.
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.
Berois, N.; G. García; R.O. de Sá, eds. (2015). Annual Fishes: Life History Strategy, Diversity, and Evolution. CRC Press. pp. 16–19. ISBN 9781482299717.
Froese, Rainer and Pauly, Daniel, eds. (2018). Species of Atlantirivulus in FishBase. November 2018 version.
Huber, J.H. (2012). "Reappraisal of the Phylogeny of Rivulus and its Allied focused on External Characters". Killi-Data Series. 2012: 9–25.