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<br />Electrofishing and seining indicated a fish community similar to <br />-_ that described by Sublette (1977) for the San Juan River. Also, col- <br />- lections of fishes from backwaters in October 1985 (Table 13; Utah <br />~ Division of Wildlife Resources, unpublished data) and in this study <br />had similar species compositions; red shiner and fathead minnow were <br />clearly the dominant fishes ~%in backwater habitats. Flannelmouth <br />sucker was the most commonly collected native species in this study <br />and in Sublette's work. Bluehead sucker was the second most abundant <br />fish taken in Sublette's survey, but not in our study. This differ- <br />ence may be due in part to the fact that Sublette sampled into head- <br />water streams of the San Juan River in New Mexico and had a larger <br />proportion of sampling stations in New Mexico than in Utah. Both <br />studies found the introduced carp throughout the respective study <br />areas. In the lower San Juan (i.e., within Utah), Sublette (1977) <br />reported red shiner "has become the dominant small fish;" our results <br />~ concur with that statement. For channel catfish, both studies found <br />similar distributions and relative abundances: catfish were more <br />prevalent downstream -- more or less below Bluff relative abundance <br />seemed slightly higher than further upstream. <br /> <br />r <br /> <br />i <br /> <br /> <br />Within the area of <br />BOR, carp and striped bass <br />made with gill <br />68% of the catch <br />stituted 20% o <br />14). Channel ca <br />14). Walleye <br />to the total cat <br />Table 14). Th <br />tions was larger <br />may have been <br />trout, northern <br />the <br />were <br /> <br />ke Powell sampled by <br />hes in collections <br />and trammel nets <br />and 61% during s <br />f the spring c <br />tfish were somewhat common during spring (8%; Table <br />is the only other species that contributed more than-1% <br />ches in spring and summer (2% and 9%, respectively; <br />e species composition of gill and trammel net collec- <br />during spring than during summer (Table 14). This <br />due to spawning activities of species such as rainbow <br />pike, and razorback sucker. <br />San Juan Arm of La <br />the dominant fis <br />During spring sa <br />ummer (Table 14). <br />atch and 28% of the <br />- 33 - <br />