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<br />.. <br />'\. <br /> <br />. '; rrn <br /> <br />Figure 9. Principal component 3 plotted against principal component 2 for <br />Horseshoe Canyon fish caught in 1953 and Blackrocks chubs. Note that the <br />Horseshoe Canyon fish almost all cluster wi th the "humpback-unidentified" chubs <br />from Blackrocks. The 3 exceptions (identified by arrows) were the smallest fish <br />evaluated in the study. Small individuals of closely-related species may be <br />difficult to identify to species due to their close multivariate morphological <br />resemblance. Z = Horseshoe Canyon; others as described in Fig. 2 <br />