Two rare trout subspecies, the Apache Trout (Oncorhynchus apache) and Gila Trout (Oncorhynchus gilae), are endemic to high elevation areas of Arizona and New Mexico. They are particularly threatened by hybridization with non-native trout and devastating wildfires. Severe wildfires caused by land use changes and exotic plants result in sedimentation and ash deposition in the clear waters where they live.
