Astyanax (fish)

name = "Astyanax"

image_width = 220px
image_caption = Blind tetra
regnum = Animalia
phylum = Chordata
superclassis = Osteichthyes
classis = Actinopterygii
subclassis = Neopterygii
infraclassis = Teleostei
superordo = Ostariophysi
ordo = Characiformes
familia = Characidae
genus = "Astyanax"
genus_authority = Baird & Girard, 1854
subdivision_ranks = Species
subdivision = Around 100, see text
synonyms ="Anoptichthys"

"Astyanax" is a genus of freshwater fish in the characid family (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 roughly 100 described "Astyanax" species and new ones being described every few months, this genus is among the largest of the entire order: "Hyphessobrycon" has about the same number, and which one is larger at any one time depends on whether more species have been recently described in one or the other. [de Lucena (2003), Nelson (2006)]

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. 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 names also refer to the "Iliad".FishBase (2006)]

Taxonomy and systematics

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. [de Lucena (2003)]

elected species

* "Astyanax aeneus" – Central Tetra
* "Astyanax armandoi" – Penjamo Tetra
* "Astyanax bimaculatus" – Twospot Tetra
* "Astyanax chico" Casciotta & Almirón, 2004
* "Astyanax correntinus" - sometimes placed in "Ctenobrycon"
* "Astyanax fasciatus" – Banded Tetra
* "Astyanax filiferus"
* "Astyanax henseli" - formerly "Tetragonopterus aeneus"
* "Astyanax jordani" – Cave Tetra or "sardina ciega"
* "Astyanax leonidas"
* "Astyanax magdalenae"
* "Astyanax meunieri"
* "Astyanax mexicanus" – Mexican Tetra and Blind Cave Fish
* "Astyanax nasutus" – Colcibolca Tetra
* "Astyanax orthodus" – Largespot Tetra
* "Astyanax paris" de las Mercedes Azpelicueta, Almirón & Casciotta, 2002
* "Astyanax pelegrini" - sometimes placed in "Ctenobrycon"
* "Astyanax puka" Mirande, Aguilera & de las Mercedes Azpelicueta, 2007
* "Astyanax troya"
* "Astyanax tupi" de las Mercedes Azpelicueta, Mirande, Almirón & Casciotta, 2003
* "Astyanax varzeae" Abilhoa & Duboc, 2007



* (2006): [ "Astyanax" species] . Version of 2006-MAR-14. Retrieved 2008-JAN-29.
* (2003): New characid fish, "Hyphessobrycon scutulatus", from the rio Teles Pires drainage, upper rio Tapajós system (Ostariophysi: Characiformes: Characidae). "Neotropical Ichthyology" 1(2): 93-96. [ PDF fulltext]
* (2006): "Fishes of the World". John Wiley & Sons, Inc. ISBN 0471250317

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