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<br />------------------- <br /> <br />SAN JUAN RIVER <br />COLORADO PIKEMINNOW POPULATION ESTIMATE <br />. HOW MANY WERE THERE? <br /> <br />. Schnabel Population Estimate <br />- 19 Fish from RM 136.6 - 119.2 in October 1995 <br />- 950/0 Confidence Intervals = 10 - 42 fish <br />- 990/0 Confidence Intervals = 8 - 54 fish <br /> <br />. Petersen Population Estimate <br />- During the 14 sampling intervals, estimates ranged from 9 - 20 fish <br />