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<br />62 REFINE INTERIM NONNATIVE STOCKING PROCEDURES <br /> <br />Predation on or competition with the endangered Colorado River fishes by nonnative <br />fishes is believed to adversely affect recruitment of the endangered fishes. Warmwater <br />sportfish are stocked in off-channel ponds or reservoirs and may escape into the <br />Colorado River drainage where they can occupy habitats (meuths of rivers, <br />backwaters, embayments, and flooded bottomlands) that are used by the endangered <br />fishes. Effective management of nonnative fishes will reduce negative impacts on the <br />endangered fishes. The U.S. Fish and Wildlife Service (Service) and Upper Basin <br />states of Colorado, Utah, and Wyoming are currently working to develop "Procedures <br />for Stocking Nonnative Fish Species in the Upper Colorado River Basin". The <br />procedures will provide guidelines that are acceptable for allowing the stocking of <br />nonnative, warmwatef sportfishes that are consistent with the recovery of the <br />endangered Colorado River fishes. <br /> <br />Recommendations: Proceed with development of the Procedures to1;lring this project <br />to a close. If Procedures that are acceptable to all interests are developed, an <br />Environmental Assessment will be written and an opinion derived through Section 7 <br />consultation that is required under the Endangered Species Act. <br /> <br />69 KENNEY RESERVOIR.. NONNATIVE FISH <br /> <br />No report received. <br /> <br />ADD-ON NONNATIVE FISH CONTROL STRATEGY <br /> <br />Study Goals Obiectives End Product: <br /> <br />Goal -To remove the potential for predation and competition on endangered fishes <br />through control of nonnative fish species from the Upper Colorado River System. <br /> <br />Objectives: <br /> <br />I. To determine the distribution and relative abundance of nonnative fishes by river <br />reach. <br /> <br />2. To identify nonnative fish species that have established self-sustaining populations in <br />upper basin rivers. <br /> <br />3, To determine and prioritize the nonnative fish species that .pose the greatest potential <br />for adverse impacts on endangered fishes through predatiol'l and competition. <br /> <br />4, To review life history summaries of the nonnative fishes that pose the greatest <br />potential for predation and competition on the endangered fIshes and identify <br />potentially vulnerable life stages, <br /> <br />A-2l <br />