Astyanax jordani

Astyanax jordani is a freshwater fish of the characin family (family Characidae) of order Characiformes, native to Mexico.[3][4] It is sometimes called the cave tetra, or by its local Spanish name tetra ciego.

Astyanax jordani
Astyanax jordani
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Characidae
Genus: Astyanax
Species:
A. jordani
Binomial name
Astyanax jordani
Synonyms[3]

Anoptichthys jordani
Anoptichthys antrobius

A blind cave fish, A. jordani is very closely related to the Mexican tetra (A. mexicanus) and their taxonomy is disputed. Some treat the two as variants of a single species (in which case A. jordani is a junior synonym of A. mexicanus) and this is supported by phylogenetic evidence,[5][6][7][8][9] but others continue to recognize the two as separate species.[10]

A. jordani is listed on the IUCN Red List as Vulnerable on the basis of shrinking population and an acutely restricted and diminishing habitat.[1] It is fairly resilient, however, having a population doubling time of 15 months.[3]

It reportedly has been introduced to the Philippines.[3]

References
  1. Contreras-Balderas, S. & P. Almada-Villela (1996). "Astyanax mexicanus ssp. jordani ". IUCN Red List of Threatened Species. 1996: e.T2270A9379535. doi:10.2305/IUCN.UK.1996.RLTS.T2270A9379535.en.
  2. Hubbs, C. L. and W. T. Innes. 1936. "The first known blind fish of the family Characidae: a new genus from Mexico"; Occ. Pap. Mus. Zoo. 342: 1-7. University of Michigan.
  3. Froese, Rainer and Pauly, Daniel, eds. (2015). "Astyanax jordani" in FishBase. October 2015 version.
  4. "Astyanax jordani". Integrated Taxonomic Information System. Retrieved 1 July 2006.
  5. Jeffery, W. (2009). Regressive evolution in Astyanax cavefish. Annu. Rev. Genet. 43, 25–47.
  6. Bradic, M., Beerli, P., Garcia-de Leon, F. J., Esquivel-Bobadilla, S. & Borowsky, R. L. (2012). Gene flow and population structure in the Mexican blind cavefish complex (Astyanax mexicanus). BMC. Evol. Biol. 12, 9.
  7. Dowling, T. E., Martasian, D. P. & Jeffery, W. R. (2002). Evidence for multiple genetic forms with similar eyeless phenotypes in the blind cavefish, Astyanax mexicanus. Mol. Biol. Evol. 19, 446–455.
  8. Strecker, U., Faúndez, V. H. & Wilkens, H. (2004). Phylogeography of surface and cave Astyanax (Teleostei) from Central and North America based on cytochrome b sequence data. Mol. Phylogenet. Evol. 33, 469–481.
  9. Keene; Yoshizawa & McGaugh (2016). Biology and Evolution of the Mexican Cavefish. pp. 77–87. ISBN 978-0-12-802148-4.
  10. Froese, Rainer and Pauly, Daniel, eds. (2017). Species of Astyanax in FishBase. April 2017 version.


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