Atlantirivulus

Atlantirivulus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cyprinodontiformes
Family:	Rivulidae
Genus:	Atlantirivulus W. J. E. M. Costa, 2008
Type species
Rivulus santensis Köhler, 1906[1]

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

1. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Atlantirivulus". Catalog of Fishes. California Academy of Sciences. Retrieved 10 September 2019.
2. 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.
3. 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.
4. 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.
5. Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Atlantirivulus". FishBase. November 2018 version.
6. Huber, J.H. (2012). "Reappraisal of the Phylogeny of Rivulus and its Allied focused on External Characters". Killi-Data Series. 2012: 9–25.