CR

Parras Pupfish

Cyprinodon latifasciatus

Unknown

Overview

The Parras pupfish is a small species of freshwater pupfish in the family Cyprinodontidae. It is endemic to the Laguna de Mayrán basin in southern Coahuila, Mexico. This species was widely thought to be extinct, 1903 being the date of the last recorded observation and it was declared to be extinct in 1930 until a single specimen was accidentally collected from an irrigation canal, in the town of Parras de la Fuente in 2012.

Cyprinodon latifasciatus faces severe threats from habitat modification and water extraction in its extremely limited range. The species is restricted to a few spring systems where groundwater pumping and agricultural diversions have dramatically reduced water levels and altered natural flow patterns. Introduced predatory fish species pose an additional threat to remaining populations in these fragmented aquatic habitats.

Threat summary

Habitat

This critically endangered pupfish is endemic to desert spring systems and associated pools in arid regions. The species requires clear, shallow waters with specific temperature and salinity ranges typical of natural spring environments.

FRESHWATER· major

Conservation measures underway

Species recoveryEx-situ conservation

Frequently asked questions

Why is Parras Pupfish classified as Critically Endangered?
Parras Pupfish is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Cyprinodon latifasciatus faces severe threats from habitat modification and water extraction in its extremely limited range. The species is restricted to a few spring systems where groundwater pumping and agricultural diversions have dramatically reduced water levels and altered natural flow patterns. Introduced predatory fish species pose an additional threat to remaining populations in these fragmented aquatic habitats.
Where does Parras Pupfish live?
Parras Pupfish occurs in Mexico. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Parras Pupfish?
The main threats to Parras Pupfish are 3.2, 8.1, 9.2, and 9.3.4. The full IUCN-classified threat record for this species is detailed on the species page.

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