Astyanax jordani

Taxobox
name = "Astyanax jordani"
status = VU
status_system = iucn2.3

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image_size = 240px
image_caption = In the Suma Aqualife Park, Japan
regnum = Animalia
phylum = Chordata
classis = Actinopterygii
ordo = Characiformes
familia = Characidae
genus = "Astyanax"
species = "A. jordani"
binomial = "Astyanax jordani"
binomial_authority = (Hubbs and Innes, 1936)

"Astyanax jordani" is a freshwater fishof the characin family (family Characidae) of
order Characiformes, native to Mexico.FishBase_species
genus=Astyanax
species=jordani
year=2006
month=March] ITIS
ID=639371
taxon=Astyanax jordani
year=2006
date=1 July] . It is called Cave Tetra (which is also used for the "A. mexicanus" subspecies mentioned above), or by its local Spanish name Sardina Ciega.

A blind cave fish, "A. jordani" is recently evolved from the Mexican tetra ("A. mexicanus"). While it can be confused with the blind cave form of "A. mexicanus," it evolved separately from the surface form, and is considered a different species. (IUCN, however, treats it as a subspecies of "A. mexicanus.")cite web
title="Astyanax mexicanus" ssp. "jordani"
url=http://www.iucnredlist.org/search/details.php/2270/all
author=Contreras-Balderas, S., and P. Almada-Villela
publisher=2006 IUCN Red List of Threatened Species
year=1996
accessdate=2006-07-01]

This characin is listed on the IUCN Red List as Vulnerable on the basis of shrinking population and an acutely-restricted and diminishing area of occupancy. It is fairly resilient, however, having a population doubling time of 15 months.

There are reports that it has been introduced to the Philippines.

"Astyanax jordani" was formerly classified as "Anoptichthys jordani," the sole member of genus "Anoptichthys," and was first described by Carl Hubbs and William T. Innes. "Anoptichthys hubbsi" and "Anoptichthys antrobius" are junior synonyms.

Note that while this fish is often called "blind cave fish", that term normally refers more specifically to the blind cave form of "A. mexicanus."

References