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-r squawfish for that matter, in these adjacent areas suggests either the small fish used the main channel, which is highly unlikely, or moved considerably within the sample backwater. It would ap- pear the latter possibility is most likely. The failure to find any young-of-the-year squawfish in areas of current supports the possibility of their moving little up or down the river during the time of the study. The data from this 2-1/2 day study of squawfish movement are inconclusive. Movement is indicated, but the extent of the move- ment is not known. Data from collections in the vicinity of the sample backwater suggested that young-of-the-year squawfish are seldom found in an area of current. This indicates that the fish move little between habitats, and that movement within the sample backwater may best explain the lack of young-of-the-year recap- tures. Comoetition and Predation The data presented in Table 4 show that rare and introduced species use the same microhabitat and suggest that competition and predation are possible. Young exotic species dominated the young-of-the-year collections of both squawfish and humpback chubs, as well as juvenile chu~s. Juvenile squawfish associated primar- ily with native species. The degree that this potential competi- tion-predation limits rare fish populations is not known, nor is there sufficient data available at this time to suggest competitive mechani sms . ." .......)-. "