Pecos pupfish (Cyprinodon pecosensis)

Scientific name: Cyprinodon pecosensis Echelle & Echelle, 1978

The Pecos pupfish (Cyprinodon pecosensis) is a freshwater fish of the family Cyprinodontidae. In the aquarium it needs water at 10–28°C (50–82°F). Native range: North America, Pecos River system in Texas and New Mexico, USA.

Pecos pupfish care at a glance

Temperature: 10–28°C (50–82°F)

Biology

Occurs in springs, sinkholes and pools of streams. 6 cm max TL. Not a seasonal killifish. Difficult to maintain in aquarium.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name: Cyprinodon pecosensis
Family: Cyprinodontidae (Pupfishes)
Order: Cyprinodontiformes (Live bearers, Killifishes and Rivulines)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 5.0
Common length: 3.9
Environment: Freshwater; benthopelagic; non-migratory
Climate: Temperate
Distribution: North America: Pecos River system in Texas and New Mexico, USA.
Conservation status (IUCN): Critically Endangered (CR) (A2ce)
Threat to humans: Harmless
Uses: Aquarium: commercial
Resilience: Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)