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<br />8 <br />can be analyzed and information can be gathered from this analysis. Colorado <br />squawfish do laycbwn an annulus, as proven by a Colorado squawfish that was <br />recaptured twice after its on - .al capture. Scales were taken at both recantll- - <br />times (approximately one growing season apart), and when the mcond recapture <br />scale was analyzed it showed a definite annulus had been formed between the <br />recapture periods. <br />This study attempts to compare age aid growth data from Colorado aquawfish <br />collected within the upper Colorado River system. Hopefully the results of <br />this study will prove beneficial to the future preservation of the Colorado <br />squawfish. <br />Acknowledgments <br />Scales that were studied were removed from Colorado squawfish in the Green <br />River between 1964 and 1966 by C. Vanicek (Utah Cooperative Fishery Unit). <br />Colorado squawfish collected in the Lower Yampa River by personnel of the <br />Colorado Division of Wildlife during 1982 also had scales removed. Colorado <br />squawfish collected in the Colorado River by K. Seethaler(Utah Cooperative <br />Fishery Unit) between 1976 and 1978 were used for relative growth analysis. <br />Special thanks go to Edmund Wick and John Hawkins for assistance and <br />advice throughout the study. Thanks are also due to Dr. Bergersen, my advising <br />professor, for assistance throughout the project.