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Goal: . Produce a sufficient supply of hatchery reared fish to support research and recovery activities, Conserve the genetic diversity present in the wild, . Status: . The Program approved the 5-year stocking plan for razorback sucker, Colorado pikeminnow, bonytail and humpback chub in the Yampa and upper Colorado rivers developed by Colorado Division of Wildlife, . During the fall of 1998, 375 razorback suckers ranging in size from 4-19 inches were stocked in the Gunnison River. To date the Program has stocked 4,938 juvenile, sub adult and adult since 1995. Thirty-eight of these stocked fish have been re- captured. . During the fall of 1998,389 razorback sucker averaging about \6 inches were stocked into the middle Green River. In addition, 125, IO-inch razorbacks were stocked into the Stirrup, a depressed wetland where the fish can overwinter. . In October 1998, 2,484 and 3,796 bonytail (about 5 inches in length) were stocked in the Colorado and Green rivers, respectively, . Construction of 12, 0.4 acre ponds at the Wahweap State Fish Hatchery will be completed this summer. . Expansion of the 24 Road Hatchery Building in Grand Junction, CO, will be completed this summer. This building will be used to hatch and raise early life stages of Colorado pikeminnow. V, Research Monitoring and Data Management Goal: To support recovery activity, monitor endangered fish status and trends, and maintain Recovery Program data archives, Status: . The humpback chub population in Black rocks canyon was estimated to be around 1,528 with 888 to 2750 representing the 95% confidence range, Estimates for other populations of humpback chub are being made . Comparison between 1994 and preliminary data of 1998 from the Colorado pikeminnow population estimates in the Colorado River suggests about a 40% increase in catch rate and 33% increase in number of adult fish, 5