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Ptychocheilus lucius <br />Adults ^ (n '.36) <br />Juveniles x----x ( n a 30) <br />Young 0----0 ( n s 256) <br />50 <br />DEPTH <br />X- \-f- <br />0 FEET <br />0 1 2 3 4 5 6 7 8 METERS <br />100 <br />v <br />m <br />a <br />E <br />a <br />CO) <br />50 <br />t <br />a <br />w ; <br />0 <br />0 <br />i 0 <br />i <br />0 <br />m <br />0 <br />100 <br />m <br />v <br />m <br />a- <br />50 <br />1 2 <br />0.5 <br />SUBSTRATE <br /> <br /> <br />c <br /> <br /> <br />« <br /> <br />m v <br />e <br />m • <br />O a <br />a <br />' v <br />0 <br />m e <br />v <br />m <br />Figure 8. Probability of use criteria for adult, juvenile, and young- <br />of-the-year Colorado squawfish from the upper Colorado River. <br />VELOCITY <br />3 4 FEET/SECOND <br />1. 0 METERS/SECOND