Astyanax mexicanus (De Filippi, 1853)
Mexican tetra
photo by The Native Fish Conservancy

Family:  Characidae (Characins; tetras), subfamily: Stethaprioninae
Max. size:  12 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater, potamodromous
Distribution:  North America: originally restricted to the Nueces, lower Rio Grande and the lower Pecos River drainages in Texas, USA; now established elsewhere in Texas (primarily streams on Edwards Plateau) and New Mexico, USA (throughout Pecos River system); also in eastern and central Mexico.
Biology:  Inhabits rocky and sandy bottoms of pools and backwaters of creeks and small to large rivers, and springs. Feeds on insects, crustaceans and worms (Ref. 7020). Migrates during winter to warmer areas (Ref. 47195).
IUCN Red List Status: Least Concern (LC); Date assessed: 08 September 2018 Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Froese, Rainer - 01.05.91
Modified by: Reyes, Rodolfo B. - 19.12.17
Checked by: Torres, Armi G. - 11.05.94

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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