Highland Splitfin
CR

Highland Splitfin

Hubbsina turneri

Declining

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Hubbsina

Overview

The Highland splitfin is a species of splitfin endemic to Mexico where it is found in the Lerma River basin. This species grows to a length of 5 centimetres (2.0 in) TL. It is the only known member of its genus, although some authorities have Hubbina as a subgenus of Girardinichthys and add Girardinichthys ireneae to the subgenus, even treating this taxon as a synonym of G.

ireneae. This species was described by Don Fernando de Buen y Lozano in 1940 with the type locality given as Cointzio, Michoacán. The name of the genus honours the American ichthyologist Carl Leavitt Hubbs (1894-1979) while the specific name honours Clarence Lester Turner (1890-1969), thus honouring two ichthyologists who worked on a review of the Goodeidae in 1939.

Hubbsina turneri faces severe threats from groundwater extraction and aquifer depletion in its limited desert spring habitat. Urban development and agricultural expansion in the Mojave Desert region have dramatically reduced water availability in the isolated spring systems this species depends upon. Climate change exacerbates these pressures by increasing evaporation rates and reducing natural recharge of the underground water sources.

Threat summary

Habitat

This critically endangered species is endemic to isolated desert springs and associated wetland habitats in the Mojave Desert region of California. It requires permanent flowing water with specific temperature and chemical conditions found only in these rare spring ecosystems.

Marine coastal/supratidal· majorArtificial - Aquatic & marine· majorWetlands (inland)· majorWetlands (inland) - Permanent freshwater lakes· major

Conservation measures underway

Site/area protectionSpecies recoveryEx-situ conservation

Frequently asked questions

Why is Highland Splitfin classified as Critically Endangered?
Highland Splitfin 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. Hubbsina turneri faces severe threats from groundwater extraction and aquifer depletion in its limited desert spring habitat. Urban development and agricultural expansion in the Mojave Desert region have dramatically reduced water availability in the isolated spring systems this species depends upon. Climate change exacerbates these pressures by increasing evaporation rates and reducing natural recharge of the underground water sources.
Where does Highland Splitfin live?
Highland Splitfin 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 Highland Splitfin?
The main threats to Highland Splitfin are 2.1, 9.3, 9.3.4, and ai-1. The full IUCN-classified threat record for this species is detailed on the species page.

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