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• A comprehensive collection of all species in backwater habitats was gathered while <br />conducting the Report B studies. There exists an opportunity to delve deeper into this <br />data to describe various species life histories, habitat selection, response to flow <br />regulation and native /nonnative species interactions. This information could eventually <br />be used to better manage the endangered fishes of Deso/Gray Canyons. <br />• Incorporate Deso/Gray fish community monitoring in the ISMP. Avoid sampling flows <br />in excess of 10,000 cfs; target flows of 7,000-8,000 cfs (see discussion of sampling <br />efficiency in Report C). Gather the necessary measures of Gila spp. morphology (as <br />outlined in Douglas et al. 1998) to aid in identification of Deso/Gray chubs. <br />• Estimate the size of the chub population at the four Deso/Gray trend sites after a <br />procedure has been established in Westwater Canyon and Black Rocks on the Colorado <br />River. Incorporate catfish. removal at those trend sites while estimating chub population <br />size. <br />xxiii <br />