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Table 2. Electrofishing catch per effort for Colorado squawfish in the <br />lower 2.2-mile reach of the Gunnison River, 1987 and 1988. <br /> MAY JUN JUL AUG SEP OCT <br />Shocking 1987 1.70 - 1.50 3.59 2.46 - <br />effort (hr) 1988 2.14 2.90 0.68 0.46 - 0.82 <br />No. caught 1987 0 - 2 7 0 - <br /> 1988 1 0 0 0 - 0 <br />No. seen but 1987 1 - 1 1 0 - <br />not caught 1988 1 1 0 0 - 0 <br />No. caught/hr 1987 0.00 - 1.33 1.95 0.00 - <br /> 1988 0.47 0.00 0.00 0.00 - 0.00 <br />No. caught + <br />seen but not 1987 0.59 - 2.00 2.23 0.00 - <br />caught/hr 1988 0.94 0.35 0.00 0.00 - 0.00 <br />Movement of Radio-Tagged Adult Fish <br />Colorado Squawfish <br />Movement of adult Colorado squawfish in the 15-mile reach and adjacent <br />areas has been monitored in recent years using radiotelemetry. During <br />1982-85 fish were radio-tagged in May and June and tracked through fall <br />(Archer et al. 1985). During 1986-88, extended-life radio tags were used <br />and the radio-tagged fish were monitored through the winter months, into <br />the following year. <br />During the 1982-85 studies, 15 of 34 squawfish (44%) captured and radio- <br />tagged in the Colorado River upstream from Black Rocks (RM. 136, Fig. 1) <br />occupied the 15-mile reach at one time or another during the May-October <br />period. <br />12