Oncorhynchus mykiss aguabonita: The Marvel of the High Sierras
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By Brad Trumbo
California’s golden trout (Oncorhynchus mykiss aguabonita) was first described by Dr. David Starr Jordan in 1893 as a species of trout of unusual beauty. Native to the South Fork Kern River and Golden Trout Creek and its tributaries, their narrow distribution has been threatened by human impact for more than a century. In the 1960s, the State of California embarked on an intense conservation program to conserve the species and their habitat. In 1978, the Golden Trout Wilderness was established within the Inyo and Sequoia National Forests, protecting the upper watersheds of the Kern and South Fork Kern Rivers.
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In 2004, the California Department of Fish and Wildlife signed an agreement with federal agencies to work on restoring backcountry habitat as part of a comprehensive conservation strategy. In that document, genetic introgression from other species is listed as the present greatest threat to golden trout within their native distribution. While threatened in their native range, golden trout have been transplanted throughout backcountry habitats in numerous western states to include a plethora of alpine lakes in the High Sierras. As early as the late 1800s, golden trout were transplanted from
