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<br />--~~-----~~~~~~-~-- <br /> <br />Table 2. Species composition and abundances by age class for monthly fish samples on the Green River, Utah, 1979. <br />Y = young-of-the-year, J = juveniles, including yearlings, A = adults. <br /> <br />Species Apri 1 May June July August September <br />Family Cyprinidae <br />Carp Y 2 196 111 106 <br />Cyprinus carpio J 2 2 2 1 <br /> A 30 29 29 24 39 30 <br />Speckled dace J 55 99 217 5 47 144 <br />Rhinichthys osculus A 1 1 12 1 <br />Creek chub 2 <br />Semotilus atromaculatus <br />Colorado squawfish Y 265 1023 <br />Ptychocheilus lucius J 18 79 114 9 9 27 <br /> A 4 7 1 3 3 4 <br />Roundtail chub Y 9 48 <br />Gi 1 a robus ta J 2 23 73 11 1 <br /> A 1 <br />Redside shiner 1 36 49 13 <br />Richardsonius balteatus <br />Fathead minnow 216 376 481 31 328 439 <br />Pimephales promelas <br />Red shiner 2803 2037 4626 1597 520 2415 <br />Notropis lutrensis -' <br /> U1 <br />