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beak <br />to species, measured for total length (mm) and weight (g), and externally <br />• examined for overall physics] condition and reproductive maturity. if evident. <br />Trout specimens were examined for evidence of possible hatchery origin. Any <br />natural wounds or infections evident on the body were treated with malachite <br />green disinfectant. Specimens were then allowed to recover and released <br />near point of capture. Identifications were based on the descriptions of <br />Beckman (1953), Baxter and Simon (1970), and Eddy and Underhill (1978). <br />Information on recreational fishing pressure and fish stocking in the <br />area were obtained from the Colorado Division of Wildlife (DOW) in Montrose. <br />Angler survey data compiled by DOW for the North Fork Gunnison River between <br />Paonia Reservoir and Somerset, as well as Anthracite Creek, was used to <br />report recreational pressure on the local fish populations. <br />6.2 Results and Discussion <br />• <br />A total of 85 fish, comprising eight species, were captured during <br />electroshocking surveys (Table 6.0-1). Of these, the bluehead mounta:n- <br />sucker (Catostomus discobolus), brown trout (Salmo trutta), rainbow trout <br />(Salmo gairdneri), and white sucker (Catostomus commersoni) were dominant <br />when considering both abundance and biomass. Mottled sculpin (Cottus bairdi), <br />although numerically dominant (51.8%), accounted for only 3.9% of to tai <br />captured biomass. By comparison, Colorado DOW electroshocking surveys <br />conducted in July 1976 on the North Fork, downstream of the Hawk's Nest permit <br />area, only accounted for the three species of sucker, mottled sculpin, and <br />speckled dace (Rhinicthys osculus). Sampling efficiency was questioned at <br />the time due to high flows (Appendix A). <br />u <br />6-2 <br />