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Table 3. Individuals per species, Colorado River study area, 1981. (N = native) <br /> DATES <br />SPECIES April May June July Total <br />Catastomidae <br />Catostomus commersoni (white sucker) 1 4 0 1 6 <br />C. discobolus (bluehead sucker) N 138 99 54 132 423 <br />C. latipinnis (flannelmouth sucker) N 16 44 18 53 131 <br />Centrarchidae <br />Lepomis cyanellus (green sunfish) 27 5 60 44 136 <br />Micropterus salmoides (largemouth bass) 4 0 0 9 13 <br />Cottidae <br />Cottus bairdi (mottled sculpin) N 0 0 0 2 2 <br />Cyprinidae <br />Cyprinus carpio (carp) 3 1 0 10 14 <br />Gila spp. N 410 1230 30 1818 3488 <br />Notropis lutrensis (red shiner) 6115 6462 223 11553 24353 <br />N. stramineus (sand shiner) 938 1174 4 1293 3409 <br />Pimephales promelas (fathead minnow) 2293 2647 385 10694 16019 <br />Ptychochielus lucius (Colorado squawfish) N 0 0 0 1 1 <br />Rhinichthys osculus (speckled dace) N 245 142 2 363 752 <br />Richardsonius balteatus (redside shiner) 0 11 0 0 11 <br />Cyprinodontidae <br />Fundulus zebrinus (plains killifish) 12 0 0 10 22 <br />Ictaluridae <br />I. melas (black bullhead) 0 0 0 4 4 <br />I. punctatus (channel catfish) 1 3 0 113 117 <br />Total 10214 11811 776 26100 48901 <br /> <br />~T; ~ ~, <br />