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<br />C") <br /> <br />4. <br /> <br />Make recommendations to regulatory agencies for control of <br />existing and future point sources to protect endangered fish <br />species <br /> <br />c..) <br />I-A <br />A <br /><:) <br /> <br />b. <br /> <br />Non-point sources of contaminants <br /> <br />1. Inventory non-point sources that impact endangered fish <br />species <br /> <br />2. Identify existing regulatory mechanisms and agencies that <br />control those sources <br /> <br />3. Identify impacts of non-point sources on endangered fish <br />species <br /> <br />4. Work cooperatively with non-point source contributors to <br />develop and implement remedial actions <br /> <br />5. Investigate other means to develop remedial actions <br />including those of the Colorado River Salinity Control Forum <br /> <br />3.5 CONTROL OF NONNATIVE FISH SPECIES (EXOTICS) <br /> <br />There are 14 fishes native to <br />in the Colorado River system. <br />listed as endangered, and the <br /> <br />the upper basin, including 6 that are only found <br />Three of the six endemic species are federally <br />razorback is proposed for listing. <br /> <br />Since the late 1800's, over 40 species of nonnative (exotic) fishes have been <br />stocked into upper basin rivers and tributaries. Many of these species have <br />been successful because of the changes in the river system that favor these <br />nonnative fishes. Nonnative fish species are successfully reproducing and are <br />in many cases, out-reproducing native fish due largely to better adaptation to <br />present environmental conditions. Presently, nonnative species comprise over <br />65 percent of the fish species found in the upper basin. Approximately 40 <br />different nonnative species have become established in the present range of <br /> <br />24 <br />