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Fish Collection Boat electrofishing produced 984 flaxmelmouth suckers and 151 bluehead suckers in 1997. No marked bluehead suckers were recaptured, but 15 marked flannehnouth suckers were recaptured on one occasion and one was recaptured twice. Recaptured flannelmouth suckers ranged in total length from 188 to 475 mm. Comparison of recapture measurements to initial measurements for the four flannelmouth suckers that were recaptured within one day of initial capture showed that total length was the most precise meas arement collected, with en-ors of - 0.64% to 0.26%. The precision of standard length measurements was also fairly good with errors of -1.43% to 0.99%. Weight was the least precise measurement taken, with errors of -6.90% to 5.80%. The remaining tagged flannehnouth suckers were in the river from 9 to 141 days before being recaptured. Total length of these fish increased an average of 0.18 mm/day (s=-0.14; range=0.00 to 0.43), standard length increased an average of 0.21 mm/day (s=0.26; range=-0.05 to 0.86) and weight increased an average of 0.06 g/day (s=0.42; range=-1.63 to 3.62). Overall, the smallest fish had the highest growth rates. Movement of tagged flannelmouth suckers in 1997 was quite variable (Figure 12). Several fish were recaptured within one mile of their release site. However, two fish were recaptured long distances (up to approximately 20 miles) upstream of their initial release site, while others were found far below (up to approximately 39 miles} their initial release site. One fish moved upstream a slight distance initially, but was later found downstream of its initial release site. Finally, one fish moved out of the Price River and was relocated in the Green River above the mouth of the Price River. Exact distances moved could not be calculated, since the fish were not followed continually, but estimates of the minimum distances moved were calculated. Minimum upstream movements averaged 0.45 miles/day (s=0.59). The longest and fastest upstream movements occurred in late spring and early summer. These movements may have been associated with spawning, since the highest rate of upstream movement was achieved by a ripe, tuberculate male, and ripe flannelmouth suckers of both sexes were captured before and after the dates of movement. Downstream movements averaged 0.15 miles/day (s=0.18), but trends by season were not noted in the limited data set. Four tagged flannelmouth suckers were captured in the Green River in 1998 during sampling conducted for other projects (Paul Badame, Utah State University, unpublished data; Utah Division of Wildlife Resources, unpublished data). Three of these fish were found below the confluence with the Price River (0.7 to 11.4 miles) while one fish was found 1.3 miles above the confluence. All of these fish had moved over 20 miles down the Price River (range=21.8 to 35.1 miles) during periods of 14 to 16 months. Electrofishing was the most successful method for capturing large-bodied fish; this gear also produced a few small bodied fish. Native species (Colorado pikeminnow, speckled dace, flannelmouth suckers, bluehead suckers, and unidentified suckers) comprised 71.7% of the total electrofishing catch. Non-native fish captured included common carp, channel catfish, red shiner, Utah chub, sand shiner, black bullhead, brown trout, cutthroat trout, fathead minnow, and green sunfish. Species composition of the electrofishing catch was similar in 1996 and 1997 (Table 3). Because red shiners and other small-bodied fish were often seen while electrofishing in 1996, but not collected, these data are biased toward larger-bodied fish. An attempt was made 8