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<br /> <br />RESULTS <br />Fish Distribution and Abundance <br />Over 330 individual samples of fish were taken during the <br />study. These included 125 samples in runs, 121 samples in back- <br />waters, 59 samples in eddies, and 19 samples in riffles. This is <br />approximately proportionate to the availability of these habitat <br />types in the study area. <br />Nineteen species of fish were collected totaling over 19,500 <br />specimens (Table 1). The introduced red shiner (Notropis lutrensis) <br />was by far the most atlundant fish, whereas the flanne1mouth sucker <br />(Catostomus latipinnis) was the most abundant native species. The <br />bony tail chub (Gila elegans) was the rarest native fish collected, <br />with only two individuals being caught. <br />Young-of-the-year juvenile and adult Colorado squawfish (35- <br />64 mm) were found during the study. <br />Young-of-the-year razorback suckers were tentatively identi- <br />fied on the basis of lateral line scales (80-88). Six were found <br />in the middle portion of the study area. The only two razorback <br />adults seen during the study were also in this area. <br />The chubs (Gila) of Desolation and Gray canyons are distinct- <br />ly different from those collected near Jensen. The Desolation <br />and Gray canyons' specimens seem to represent a population dis- <br />tinct from the one near Jensen. Dorsal-anal fin ray counts (9-9 <br />and 9-10), a narrow caudal peduncle, an obvious nuchal hump in <br /> <br />,..... ~". <br /> <br />~ <br />