Brown Trout

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Brown Trout More piscivorous than rainbow trout Native fish often have a difficult time persisting with large populations of brown trout. Desired Future Condition for the Lees Ferry Trout Fishery A high quality trout fishery in GCNRA, as further described in the Recreation DFC that does not adversely affect the native aquatic community in GCNP. • Minimize emigration of non-native fish from the Lees Ferry reach in Glen Canyon National Recreation Area to downstream locations. • Minimize emigration of non-native warm water fish to the mainstem Colorado River.

Rainbow Trout	Brown Trout

Updates Brown trout numbers during AZGFD monitoring in the Lees Ferry reach. AZGFD identifies that the increase in brown trout numbers may be related to the recent fall HFEs. Trout piscivory in the Colorado River, Grand Canyon: Effects of turbidity, temperature, and fish prey availability

Information and Links Lees Ferry Rainbow Trout Fishery Page Bright Angel Creek Trout Reduction Project Questions Why are brown trout increasing in the Lees Ferry reach? When do brown trout spawn in Lees Ferry? Could delaying a fall HFE be effective in disrupting the brown trout spawn? Presentations and Papers 2016 Brown Trout Update Lees Ferry Bright Angel Creek Non-Native Trout Reduction, Grand Canyon National Park 2013 Diets of trout in Bright Angel Creek Nonnative fish control in GCNP tributaries 2011 Yard et al. 2011. Trout piscivory in the Colorado River, Grand Canyon: Effects of turbidity, temperature, and fish prey availability. Transactions of the American Fisheries Society. Other Stuff