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<br />pikeminnow, razorback sucker, or Gila spp. were captured. Only three larval fish (flannelmouth <br />sucker) were captured. <br />Cavalli (2000) sampled for larval fish in May, late June, and early July in 1998. He found <br />total catch of larval Colorado pikeminnow in the Green River and canal were low, the result of <br />high flows. He did not capture any larval razorback sucker but did capture one pikeminnow and <br />11 other larval species, including bluehead sucker, flannelmouth sucker, and Gila spp. Cavalli <br />(2000) concluded that native fishes, including Colorado pikeminnow and Gila spp., were <br />probably entrained in the Green River Canal system. We concur that this is likely, but exact <br />numbers remain unknown. <br />One razorback sucker and six Colorado pikeminnow were captured in the raceway and canal. <br />The razorback sucker and sub-adult pikeminnow were captured in the raceway. Five of six <br />Colorado pikeminnow were $500 mm, classified as adults (Tyus 1990). These five pikeminnow <br />were captured in mid-July between the first and second siphons. All endangered fish were <br />captured in the first four miles (6.4 km) of the canal; no endangered fish were captured or <br />observed in the canal below the second siphon. <br />Cavalli (2000) did not sample the canal for adult fish. However, he reported that, prior to the <br />removal of a concrete wall in front of the power plant, a large number of fish were found <br />impinged on the intake grate of Thayn Power Plant in 1998. These fish included one razorback <br />sucker, four flannelmouth sucker, one bluehead sucker, and two common carp, all identified by <br />an aquatic biologist; 228 unidentified suckers, 85 common carp, three channel catfish, and 16 <br />unidentified fish were removed from the grate by power plant and UDWR personnel. This <br />suggests that many native fish, including endangered species, disperse into the raceway and