Laserfiche WebLink
No sport £lsh were taken in October and a total of only 4 species of <br />fish were identified i~om samples. <br />Ir. October the western white sucker xas most numerous in samples, <br />and between the xhite sucker and bluehead mountain sucker these species <br />made up 50;$ of the catch numerically and 69y of the catch by weight. <br />Tne second most abundant group was the cyprinids, with 1 species (Colorado <br />speckled dace) contributing 3'~ of the catch numerically and ~ by weight. <br />One other species (the Colorado mottled sculpin) constituted the remainder <br />of the catch of the North Fork. <br />At one Stevens Gulch Station, SG-4(d) there wes sufficient water to <br />support small fish and two species were captured (Western white sucker and <br />Colorado speckled dace). 6,2.2 Abundance <br />During N!arch the speckled dace and mottled sculpin xere most abundant <br />in samples, but the three species of suckers provided the bulk o£ the <br />• biomass, cont=ibuting ~6,°b of the xeight. Eight species were identi~°ied from <br />the March sample. Species not reported before from the North Fork. were <br />the fathead minnow (Pimeuhales promelas} and the green' sunfish (Lemmas <br />cyanellus). The first and only trout was also captured at Station NF-2. <br />The July sampling was taken primarily by seine instead of electro- <br />shocking because of equipment problems. For this reason data are qualita- <br />tive and no estimate was made of biomass in the areas sampled. Sampling by <br />net is not as effective in capturing the mottled sculpin, which often <br />seeks out rock crevices, resulting in this species being poorly represented <br />in the sample. Of the species captured suckers were again dominant. Both <br />numerically and by size the xhite sucker was the dominant fish. No new <br />species were captured, but the fathead minnox was abundant in the slow pools, <br /> <br />6-4 <br />