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. DRAFT . A total of seven measurements were taken during the investigation, in areas where the fish were either sedentary or moved within a discrete habitat that could be characterized by point measurements. Velocities observed in and around the fishes location were generally less than a foot per second (f/s), ranging from -0.2 to 1.3 f/s. Depths at the fishes locations ranged from 2.3 to 4.9 feet. . Habi tats used by pike were generally associated with some type of structure in the channel that provided a current break and physical cover. All the fish observed were found in close proximity to the shoreline, generally inunediately below cobble bars or sandbars that created large slow eddies or embayments. On two occasions the fish were visually observed cruising up and down slackwater areas along the shoreline, consistently remaining only 3 to 4 feet out from the water's edge. The continuous movements of the fish in these areas indicate that the fish may be using these discrete area of slower current as foraging areas. . Interactions Between NortheDn Pike and Colorado Squawfish . No interactions between northern pike or Colorado squawfish were observed during the 87-88 winter. Due to the small number of pike that were radio- tagged and the limited observations that were made on these fish, conclusions on interactions with other fish cannot be made. It appears however, from observations of habitat used by pike and that used by squawfish, that similari ties do exist in the two species habitat preferences. Both species seem to utilize distinct areas of lower velocities associated with instream structures such as sandbars or cobble bars. It does seem however, that pike may have a slightly narrower preference for habitat features which includes areas close to shorelines and that have very low velocities. This type of habitat is well within the range of habitats where squawfish were observed, particularly squawfish which are active and probably foraging, making the probability of interaction between the species in the study area highly likely. . . . Northern pike and razorback suckers were often found in close proximity in the area of the river between RMI 307 and RMI 311. On two occasions a razorback sucker and northern pike were observed in the same eddy. No interactions were apparent with the exception of one occasion when a pike passed within 2 to 3 feet of a sedentary razorback, displacing the razorback about 10 to 15 feet from its position. . . 50 .