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<br />.. <br /> <br />0.40); snout to anteriormost edge of orbit (No.3; 0.54); and <br /> <br />occiput to dorsalmost part of opercular opening (No.9; 0.55). <br /> <br />Several patte~ns were observed within the scatterplots. <br /> <br />from Blackrocks, Colorado, sorted as follows: <br /> <br />1. With PC2 plotted against PC1, there appeared among larger <br /> <br />Fish <br /> <br />fish a gap between between many of the "roundtail" chubs and <br /> <br />the grouping comprised of "humpback" and unidentified or <br /> <br />intermediate specimens (Fig. 2). <br /> <br />However, separation of the <br /> <br />predetermined groups was not absolute..~::rn <br /> <br />2. When PC3 was plotted against PC2, there resulted two <br /> <br />discrete clusters separated by an obvious gap. <br /> <br />One cluster <br /> <br />exclusively containing "roundtail" chubs and the other both <br /> <br />"humpback" chubs and unidentified or intermediate morphs <br /> <br />(Fig. 4). <br /> <br />Values for all unidentified fish were largely <br /> <br />d i s t rib ute dab 0 u t the reg ion c 1 0 s est tot he" r 0 un d t ail II <br /> <br />cluster, but separated by a gap from the latter with some <br /> <br />specimens plotting within the "humpback" chub cluster. <br /> <br />3. A possible "bony tail" morph caught at Blackrocks in 1985 <br /> <br />plotted in or near the cluster of points containing "hump- <br /> <br />back" and unidentified chubs (Fig. 4). <br /> <br />~ish ~ollected in Westwater Canyon sorted less discretely (Fig. <br /> <br />5). ~hen this collection were compared with fish from Black- <br /> <br />rocks, t', majority fell into the "humpback-unidentified" <br /> <br />category. <br /> <br />At least 5 indivijuals were grouped with "roundtail" <br /> <br />2. <br />