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Table 9. Summary of documented illicit transfer of nonnative warmwater fish species in western Colorado in 1980s and 1990s. Reservoir Fish species Approximate source or pond Confirmed catch Established o elation year of illicit transfer(s) waters(s) (s) Connected Lakes Walleve Doubtful Earl 1990s Rifle Gap Reservoir Walleye Unknown Rifle Gap Reservoir Crawford Northern pike Unknown Early 1990s Harvey Gap, Paonia reservoirs Black crappie Yes Harvey G Reservoir Harvey Gap Northern pike Yes Late 1980s Rio Blanco Reservoir, Yampa River Juniata Wall m Yes Earl 1990s Rifle Ga Reservoir Black crappie Yes Northern pike No Mid 1980s Rio Blanco Reservoir Kenney Largemouth bass No Blue ' No McPhee Northern pike Unknown Early 1990s Narraguinup, Vallecito reservoirs Wall eve Narra u Reservoir Black crappie Harvey Gap, Rifle Gap Northern pike Yes Early 1990s Rio Blanco reservoirs Yellow perch Crawford Reservoir + Stagecoach Northern pike Yes Earl 1990s Yam a River Vega Northern pike Unknown Mid 1990s Harvey Gap Reservoir The Division of Wildlife makes every attempt to listen to all angling interests in developing its management plans for specific waters and strives for balance among the various sport fishes on both biological and recreational bases. However, not all species are slated to be managed for every individual interest. Yet there remains a challenging balancing act that is increasingly difficult given the growing interest in warmwater angling opportunity, a greater emphasis on the non-trout native fishes, and the complications of reduced trout production by the State's fish hatcheries. Those responsible for illicit introductions act selfishly, ignoring the potential damage to the native or sport fish resources of the State in favor of personal satisfaction and preference. In a few instances, a fishery for a warmwater species has resulted due to its illicit introduction. Inevitably, however, the establishment of 20