Tecopa pupfish
| Tecopa pupfish | |
|---|---|
| Live Tecopa pupfish | |
| Grayscale image of a live Tecopa pupfish | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Actinopterygii | 
| Order: | Cyprinodontiformes | 
| Family: | Cyprinodontidae | 
| Genus: | Cyprinodon | 
| Species: | |
| Subspecies: | †C. n. calidae | 
| Trinomial name | |
| †Cyprinodon nevadensis calidae R. R. Miller, 1948 | |
The Tecopa pupfish (Cyprinodon nevadensis calidae) is an extinct subspecies of the Amargosa pupfish (Cyprinodon nevadensis). The small, heat-tolerant pupfish was endemic to the outflows of a pair of hot springs in the Mojave Desert of Inyo County, California. Habitat modifications, the introduction of non-native species and hybridization with the related Amargosa River pupfish led to its extinction around 1979.