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9 Changes in Species Composition There were 2,371 fish captured in 1992 and 2,285 in 1993 (Tables Gl-G6, Appendix). Forty-five percent of the fish were collected by beach seines, 1% by trammel nets, and 54% by electrofishing. Wild Colorado squawfish composed less than 1.0% (17 in 1992 and 15 in 1993) of the fish community of the White River below Taylor Draw Dam in 1992 and 1993 (Figure 9, Table G1- G6, Appendix). Squawfish composed 2.9% (11 fish) and 0.6% (4 fish) of the fish collected immediately downstream of Taylor Draw Dam (167.4-167.8 rkm) in 1992 and 1993, respectively (Tables G7- G10, Appendix). The species composition in 1992 was 56% endemic and 44% exotic species in the Colorado reach, and 26% endemic and 74% exotic species in the Utah reach (Figure 9). The species composition in 1993 was 67% endemic and 33% exotic species in the Colorado reach, and 45% endemic and 5501 exotic species in the Utah reach (Figure 9). Exotic species (74% in 1992 and 55% in 1993) were more abundant in the lower reach (0.5-110.6 rkm) of the White River and endemic species (56% in 1992 and 67% in 1993) were more abundant in the upper reach (122.0-167.8 rkm) for both years (Figure 10, Tables G7-G10, Appendix). Flannelmouth and bluehead suckers, speckled dace, and mountain whitefish made up the majority of endemic species; red shiner, channel catfish, and carp the bulk of exotic species in 1992 and 1993. The species composition immediately downstream of Taylor Draw Dam (167.4-167.8 rkm) consisted of 3916 endemic (mountain whitefish and flannelmouth sucker) and 61% exotic species (rainbow trout, channel catfish, carp) in 1992 (Figure 10, Tables G7-G10, Appendix). In 1993 the species composition was 53% endemic (flannelmouth, bluehead suckers) and 4811 exotic species (red shiner, carp, rainbow trout). Immediately downstream (166.6-rkm) the species composition was 64% endemic (flannelmouth sucker, mountain whitefish) and 36% exotic species (channel catfish, rainbow trout). Before the completion (December 1984) of Taylor Draw Dam exotic species were only dominant in the Utah reach of the White River and endemic species were dominant in the Colorado reach of the river (Figure 11, Tables H1 and H2, Appendix). After the completion of the dam exotic species moved upstream (or downstream after being stocked above the dam) and were dominant in the Utah reach and lower portion of the Colorado reach and in Kenney Reservoir, and endemic species only remain dominant in about a 40-rkm reach downstream of the dam. Sampling to determine species composition above Kenney Reservoir was not conducted in 1992 or 1993. 0 18 a