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. DRAFT . to 16.6 miles. Following the first radio contact, most fish remained in a relatively localized reach of river. Mean total movement or the average sum of the distance moved up and down the river during year 1 was 6.0 miles (0.4 to 22.8 miles), while mean net movement or the resultant distance moved either up (+) or down (-) river was 5.5 miles (-0.1 to +22.8 miles). The similarity between total and net movement suggests that, other than moving up or down the river, the fish moved relatively little during the winter months. . Long-range movement during year 2 was similar to that observed in year 1. Generally, most net long-range movement occurred between the point of release and the point of first radio contact. Howeve r, the magni tude of these movements were generally less in year 2. Movement between the release point and location of first contact averaged 1.3 miles with a range of 0.0 to 7.1 miles. Following the first radio contact, all but two fish remained in a relatively localized reach of river. Net movement of Colorado squawfish subsequent to the first radio contact averaged 5.8 miles and ranged from 0.0 to 25.9 miles. These figures include movements of 25.7 and 25.9 miles by the above mentioned squawfish, OR3237 and GR6365, respectively. Movement of one squawfish (OR3237), which was presumed dead after recovering it's transmitter nearly 5 months after implant, may have been associated with poor fitness and not indicative of normal movement. Excluding the net movement of this fish and the other squawfish (GR-6365), net movement of the remaining eight squawfish averaged 0.8 miles with a range of -0.9 to 1.8 miles. . . 6.1.2.2. Razorback SUcker . The mean distance moved by razorback suckers between the release site and the location of first radio contact during year 1 was 7.2 miles with a range of 0.1 to 31. 6 miles. Following the fi rst radio contact, most fish remained in a relatively localized reach of river. Mean total movement or the average sum of the distance moved up and down the river during year 1 was 2.4 miles (0 to 10.8 miles) . One razorback sucker (OR3266) moved 31. 6 miles downstream from the release site and remained in the same location for the remainder of the study. Mean net movement or the resultant distance moved either up (+) or down (-) river was 2.2 miles (-10.8 to +0.8 miles). The similarity between total and net movement suggests that, other than moving up or down the river, the fish moved relatively little during the winter months. . . Long-range movement during year 2 was similar to that observed in year 1. Generally, most net long-range movement occurred between the point of release and the point of first radio contact. Net movement following the first radio contact, averaged 2.7 miles, with a range of -5.9 to 6.3 miles. However, the magni tude of these movements were generally less in year 2. Movement between the release point and location of first contact averaged 4.9 miles with a range of 0.1 to 22.2 miles for razorback suckers. . 6.1.3 Homing Behavior of Squawfish and Razorbacks . Observed movement of Colorado squawfish and razorback suckers indicate that these fish have an affinity for not only a given reach of river, but very specific locations within that reach. On numerous occasions during this study, fish were observed in a particular eddy or side channel over long periods of 26 .