Once prolific throughout the state, these populations of native fish have been significantly impacted by human actions such as logging, mining, and water infrastructure, as well as natural stressors such as competition from non-native trout, aquatic invasive species, and habitat fragmentation.Ĭolorado Trout Unlimited and various TU chapters continue to work closely with our agency partners (CPW, USFS, USFWS, NPS, BLM, etc.) to protect and expand populations of Rio Grande, Colorado River, and Greenback Cutthroat. By working closely with land managers, other non-profit partners, private landowners, academic institutions, and communities across the state, we continue to implement on-the-ground projects that help to protect and restore habitat and populations of native trout. Fully grown fish on average range from 15 to 30 cm in length, usually weighing from 0. The Colorado Golden Trout is distinguished by spectacularly bright coloration of golden and vivid red, with horizontal bands on the sides. There are six lineages within four subspecies of native trout that were once endemic to rivers in Colorado: The Yellowfin Cutthroat (Twin Lakes and Arkansas River Watershed), currently believed to be extinct the Rio Grande Cutthroat in the San Luis Valley and New Mexico the Greenback Cutthroat in the South Platte River Basin and the Colorado River Cutthroat on the western slope comprised of 3 distinct lineages (San Juan, “Green” Gunnison/Colorado, and “Blue” White/Yampa). These fish are endemic to cold mountain lakes, rivers and streams in the Rocky Mountain region of Colorado.
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