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carp, red shiner, mountain sucker (Catostomus platyrhynchus), black bullhead <br />and channel catfish were added to the list of fishes collected from the same <br />locations in 1975. Fishes most frequently collected were suckers, dace, <br />fathead minnows, and mottled sculpins. In July-August, 1975, no fishes were <br />collected from Yellow Creek; reported from the White River alone were 109 <br />flannelmouth sucker, 32 speckled dace, 15 bluehead sucker, 10 mottled sculpin, <br />5 roundtail chub, 2 carp, 1 black bullhead and 1 red shiner. In October and <br />November, 1975, 98 mottled sculpins, 70 speckled dace, 9 mountain whitefish, <br />8 bluehead suckers,4 flannelmouth suckers,l flannelmouth x bluehead hybrid, <br />1 brown trout, 1 roundtail chub, 1 fathead minnow and 1 channel catfish were <br />collected from the White River. Fish sampling continued through 1976, <br />but no additional species were found. During July-August, 1976, collections <br />were again restricted to the White River; 180 flannelmouth sucker, 163 <br />speckled dace, 75 mottled sculpins,39 bluehead suckers,5 fathead minnows, 1 <br />roundtail chub and 1 carp were taken. <br />Goettl and Edde (1978) collected fishes at several stations on <br />Piceance Creek in 1975 and 1976; they summarized previous fish studies on <br />Piceance Creek but did not sample the White River. <br />Our studies began in July 1975 and have thus far resulted in two <br />masters theses (with two more underway) and our unpublished semi-annual <br />progress reports. Ames (1977) reported on aquatic insects at four sites on <br />the White River between Meeker and Rangely collected from July 1975 to <br />September 1976. Species diversity values were determined for all White River <br />sampling sites. Species composition and abundance were correlated with <br />longitudinal changes in stream substrate and other physical character- <br />istics. Significant variance between sampling sites on the White River was <br />8 <br />