Allotoca diazi
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Allotoca diazi faces severe population decline primarily due to habitat degradation and water pollution in its native Mexican freshwater systems. The species has experienced dramatic range reduction, with several historical populations now extinct due to urban development and agricultural runoff contaminating its spring-fed habitats. Introduction of non-native fish species has further compromised remaining populations through competition and predation pressure.
Habitat
This endemic Mexican goodeid inhabits clear, spring-fed freshwater systems in the Lerma River basin of central Mexico. The species requires well-oxygenated waters with stable temperatures and abundant aquatic vegetation, typically found in natural springs and their associated streams at elevations between 1,800-2,200 meters.
