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<br />Table 2. Individuals per species, Yampa River study area, 1981 (N = native) <br /> DATES <br />SPECIES April June July August Total <br />Catastomidae <br />Catostomus commersoni (white sucker) 0 5 1 3 9 <br />C. discobolus (bluehead sucker) N 1 43 163 320 527 <br />C. latipinnis (flannelmouth sucker) N 8 37 46 88 179 <br />Unid. Catastomidae 0 0 0 1 1 <br />Centrarchidae <br />Lepomis cyanellus (green sunfish) 0 0 4 0 4 <br />Cottidae <br />Cottus bairdi (mottled sculpin) N 1 2 1 0 4 <br />Cyprinidae <br />Cyprinus carpio (carp) 2 2 <br />Gila spp. N 13 281 1219 4310 5823 <br />Notropis lutrensis (red shiner) 1 70 1101 6391 7563 <br />N. stramineus (sand shiner) 6 1 72 312 <br />Pimephales promelas (fathead minnow) 0 22 46 956 <br />Ptychochielus lucius (Colorado squawfish) N 0 0 10 13 23 <br />Rhinichthys osculus (speckled dace) N 20 541 1176 1106 <br />Richardsonius balteatus (redside shiner) 8 234 42 336 620 <br />Semotilus atromaculatus (creek chub) 0 0 0 1 1 <br />Unid. Cyprinidae 0 0 0 32 32 <br />Cyprinodontidae <br />Fundulus zebrinus (plains killifish) 0 0 0 1 1 <br />Ictaluridae <br />I. punctatus (channel catfish) 0 0 0 11 11 <br />Salmonidae <br />Prosopium williamsoni (mountain whitefish) N 1 0 0 0 1 <br />Totals 59 1236 3883 13881 19059 <br /> <br />