Cyprinodon pecosensis Echelle & Echelle, 1978
Pecos pupfish
Pecos pupfish
Cyprinodon pecosensis
photo by Thomas, C.

Family:  Cyprinodontidae (Pupfishes), subfamily: Cyprinodontinae
Max. size:  5 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater, non-migratory
Distribution:  North America: Pecos River system in Texas and New Mexico, USA.
Diagnosis:   
Biology:  Occurs in springs, sinkholes and pools of streams. 6 cm max TL (Ref. 5723). Not a seasonal killifish. Difficult to maintain in aquarium (Ref. 27139).
IUCN Red List Status: Vulnerable (VU); Date assessed: 22 November 2011 (B1ab(iii)+2ab(iii)) Ref. (130435)
Threat to humans:  harmless
Country info:  Known only from the Pecos River system in Texas and New Mexico. Common but hybridizing with, and possibly being replaced by, introduced population of Cyprinodon variegatus (Ref. 5723). Also Ref. 27139. Status of threat: endangered; status declined since 1989. Criteria: 1,4 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).


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