Gila trout (Oncorhynchus gilae) The Gila trout is native to tributaries of the Gila River in Arizona and New Mexico and is one of the rarest trout in the US. The Gila trout is found historically in the Verde and Agua Fria drainages in Arizona. Natural fish barriers prevented Gila trout from entering the upper Tonto Creek drainage (AZ). Gila trout have persisted in five streams within the Gila National Forest, New Mexico, including: Iron, McKenna, and Spruce creeks in the Gila Wilderness Area, along with Main and South Diamond creeks in the Aldo Leopold Wilderness Area.
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