Astyanax (fish)

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Astyanax fasciatus (Mexican blind cavefish) 1 (15719439215).jpg
Astyanax fasciatus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Characidae
Subfamily: incertae sedis
Genus: Astyanax
S. F. Baird & Girard, 1854
Type species
Astyanax argentatus
Baird & Girard, 1854

Anoptichthys Hubbs & Innes, 1936
Bertoniolus Fowler, 1918
Bramocharax Gill, 1877 [1]
Evenichthys Whitley, 1935
Poecilurichthys Gill, 1858
Psalidodon Eigenmann, 1911
Zygogaster Eigenmann, 1913

Astyanax is a genus of freshwater fish in the family Characidae of the order Characiformes. Some of these fish, like many of their relatives, are kept as aquarium pets and known collectively as tetras. With around 150 described species and new ones being described every few months, this genus is among the largest of the entire order; Hyphessobrycon also has more than 145 species and which one is larger at any one time depends on whether more species have been recently described in one or the other. The blind cave fish, a form of A. mexicanus, is a famous member of this genus. A. jordani, a different but closely related blind fish, was formerly considered to form its own genus, Anoptichthys.

The type species is A. argentatus, now regarded as a form of A. mexicanus, the Mexican tetra. The generic name comes from Astyanax, a character in Greek mythology, who was the son of Hector of Troy; in homage to this, several specific epithets also refer to the Iliad.[2]

Taxonomy and systematics[edit]

This genus is more or less defined as in 1917 by Carl H. Eigenmann. The lack of comprehensive phylogenetic analyses dealing with this genus is hindering a thorough review and the relationships remain as indeterminate as the monophyly is doubtful. Although included in Astyanax by FishBase, phylogenetic evidence supports moving A. aurocaudatus back to the monotypic genus Carlastyanax.[3]


There are currently 147 recognized species in this genus:


  1. ^ a b c d e f Schmitter-Soto, Juan J. (2016). "A phylogeny of Astyanax (Characiformes: Characidae) in Central and North America". Zootaxa. 4109 (2): 101–130. doi:10.11646/zootaxa.4109.2.1. 
  2. ^ Froese, Rainer, and Daniel Pauly, eds. (2016). Species of Astyanax in FishBase. October 2016 version.
  3. ^ Mirande, J.M., Jerep, F.C. & Vanegas-Ríos, J.A. (2013). "Phylogenetic relationships of the enigmatic Carlastyanax aurocaudatus (Eigenmann) with remarks on the phylogeny of the Stevardiinae (Teleostei: Characidae)". Neotropical Ichthyology. 11 (4): 747–766. doi:10.1590/s1679-62252013000400003. 
  4. ^ a b c Lucena, C.A.S.d. & Soares, H.G. (2016). "Review of species of the Astyanax bimaculatus "caudal peduncle spot" subgroup sensu Garutti & Langeani (Characiformes, Characidae) from the rio La Plata and rio São Francisco drainages and coastal systems of southern Brazil and Uruguay". Zootaxa. 4072 (1): 101–125. doi:10.11646/zootaxa.4072.1.5. 
  5. ^ Bertaco, V.A. & Vigo, A.C. (2015). "A new species of Astyanax Baird & Girard (Ostariophysi: Characidae) from the rio Taquari-Antas basin, southern Brazil" (PDF). Neotropical Ichthyology. 13 (2): 265–272. 
  6. ^ a b c d e Garavello, J.C.; Sampaio, F.A.A. (2010). "Five new species of genus Astyanax Baird & Girard, 1854 from Rio Iguaçu, Paraná, Brazil (Ostariophysi, Characiformes, Characidae)" (PDF). Brazilian Journal of Biology. 70 (3): 847–865. doi:10.1590/s1519-69842010000400016. 
  7. ^ a b c Lucena, C.A.S.d., Castro, J.B. & Bertaco, V.A. (2013). "Three new species of Astyanax from drainages of southern Brazil (Characiformes: Characidae)". Neotropical Ichthyology. 11 (3): 537–552. doi:10.1590/s1679-62252013000300007. 
  8. ^ Bertaco, V.A. (2014). "Astyanax douradilho, a new characid fish from the rio Tramandaí system, southern Brazil (Characiformes: Characidae)" (PDF). Zootaxa. 3794 (3): 492–500. doi:10.11646/zootaxa.3794.3.10. 
  9. ^ Ingenito, L.F.S. & Duboc, L.F. (2014). "A new species of Astyanax (Ostariophysi: Characiformes: Characidae) from the upper rio Iguaçu basin, southern Brazil". Neotropical Ichthyology. 12 (2): 281–290. doi:10.1590/1982-0224-20130117. 
  10. ^ Oliveira, C.A.M., Abilhoa, V. & Pavanelli, C.S. (2013). "Astyanax guaricana (Ostariophysi: Characidae), a new species from the rio Cubatão drainage, Paraná State, Southern Brazil". Neotropical Ichthyology. 11 (2): 291–296. doi:10.1590/s1679-62252013000200007. 
  11. ^ Marinho, M.M.F., Camelier, P. & Birindelli, J.L.O. (2015). "Redescription of Astyanax guianensis Eigenmann, 1909 (Characiformes: Characidae), a poorly known and widespread fish from the Amazon, Orinoco and Guiana Shield drainages" (PDF). Zootaxa. 3931 (4): 568–578. doi:10.11646/zootaxa.3931.4.6. 
  12. ^ Camelier, P. & Zanata, A.M. (2014). "A new species of Astyanax Baird & Girard (Characiformes: Characidae) from the Rio Paraguaçu basin, Chapada Diamantina, Bahia, Brazil, with comments on bony hooks on all fins". Journal of Fish Biology. 84 (2): 475–490. doi:10.1111/jfb.12295. 
  13. ^ Freitas, M.R.M., Lucinda, P.H.F. & Lucena, C.A.S. (2015). "Redescription of Astyanax novae Eigenmann, 1911 (Teleostei: Characidae)". Ichthyological Exploration of Freshwaters. 26 (2): 183–192. 
  14. ^ Lucena, C.A.S.d., Bertaco, V.A. & Berbigier, G. (2013). "A new species of Astyanax from headwater streams of southern Brazil (Characiformes: Characidae)". Zootaxa. 3700 (2): 226–236. 
  15. ^ Tagliacollo, V.A., Britzke, R., Silva, G.S.C. & Benine, R.C. (2011). "Astyanax pirapuan: a new characid species from the upper Rio Paraguay system, Mato Grosso, Central Brazil (Characiformes, Characidae)". Zootaxa. 2749: 40–46.