Predation or competition by nonnative fish species is a serious threat to the listed fishes and perhaps the most challenging to manage. The Recovery Program is working proactively to meet the challenge of nonnative fish management by removing the most problematic nonnative species from rivers, and preventing nonnative fish escapement from upstream reservoirs into downstream river habitats. The actions recognize the dual responsibilities of state and federal wildlife agencies to conserve native fish species while providing sportfishing opportunities.
Basin-wide Nonnative Strategy
Upper Colorado River Basin Nonnative and Invasive Aquatic Species Prevention and Control Strategy – May 2015
Final Nonnative Fish Management Policy – February 4, 2004
Yampa River Strategy
Yampa River Nonnative Fish Control Strategy – June 30, 2008
Colorado Division of Wildlife, Aquatic Wildlife Section. 2010. Yampa River Basin Aquatic Wildlife Management Plan
Directive of the Recovery Implementation Committee Regarding Nonnative Fish Management in the Yampa River Basin – October 13, 2006
Upper Colorado Basin Nonnative Fish Stocking Procedures
Procedures for Stocking Nonnative Fish Species in the Upper Colorado River Basin, Revised April 14, 2009.
List of Compatible and Non-Compatible Nonnative Species in the Upper Colorado River Basin
Interim Principles for Stocking Sterile Walleye in the Upper Colorado River Basin – May 2022
Procedures for Stocking Nonnative Fish Species in the Upper Colorado River Basin, September 5, 1996.
Procedures for Stocking Nonnative Fish Species in the Upper Colorado River Basin – Finding of No Significant Impact (FONSI) -October 1996.
Procedures for Stocking Nonnative Fish Species in the Upper Colorado River Basin – Final Environmental Assessment (Final EA) -September 4, 1996.