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. ._7 <br />5. Developing a mechanism to provide systematic review, update, and reporting <br />to the Implementation Committee to insure follow through and development of <br />long-term propagation objectives. <br />6. Providing strategies and tasks to meet interim or short-term research <br />needs. <br />7. Developing a plan for maintaining and adequate gene pool for the <br />preservation of these four species in at least two refugia. <br />The plan recognizes and is based upon the propagation philosophy articulated in <br />the Implementation Plan. <br />BACKGROUND <br />The need for propagation of the endangered fishes of the Colorado River Basin <br />has long been recognized. Actual-attempts to propagate these fishes began in <br />1973 when several adult squawfish were moved from the wild to Willow Beach <br />National Fish Hatchery in Arizona, with several thousand offspring being <br />produced in 1974. Razorback sucker were propagated at Dexter National Fish <br />Hatchery, New Mexico, that same year. Subsequently, thousands of these two <br />species have been produced at pexter; most being used in recovery activities in <br />the lower basin, although several thousand Colorado squawfish and razorback <br />sucker have been utilized in research projects in the upper basin. The history <br />