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ground tracking never detected them in close, spatial proximity with each other. Consequently, during this evaluation, movement data from radio-tagged pikeminnow during spawning did not lead researchers associated with other ongoing station Recovery Implementation Program studies to delineate aggregations of pikeminnow or identify new and verify former spawning areas either in the Gunnison or Colorado rivers. No documentable evidence was obtained from this evaluation to conclude that stocked juvenile, sub-adult, or adult razorback sucker used the fish passage at Redlands. Certainly, more time will be required to determine if razorback sucker become established in local rivers and meaningful conclusions can be made as to the usefulness and role fish passage will provide for recovery of this species. Several different movement chronologies can be described for Colorado pikeminnow using and occupying the Gunnison River. First, prior to the fish passageway being constructed, some fish captured downstream from Redlands Diversion Dam that were radiotagged and translocated upstream of the Redlands Diversion Dam returned downstream over this dam and survived, whereas others remained upstream of the dam for over 7 years. Second, fish captured upstream of the diversion dam that were determined to be residents of the Gunnison River were recaptured 6 to 7 years later very near the location of their original capture. These included both fish that had been radiotagged and those that had not. Following construction of the passageway at Redlands, other movement chronologies were documented. First, some non-radiotagged fish that had moved through the passageway remained upstream following release; others moved downstream over the dam. Second, some fish that moved through the passageway and were released upstream of the diversion dam, subsequently moved downstream over the diversion dam and reascended the same passageway. Construction of the passageway at Redlands Dam has reconnected a small remnant population of Colorado pikeminnow in the Gunnison River to that in the Colorado River. The passageway has provided a means by which both listed and non-listed, native fish populations downstream of the diversion dam can interchange with the existing native fish populations upstream of this structure. Also, Colorado pikeminnow now can re-colonize and re-populate stream reaches upstream of the dam in the Gunnison River, demonstrating that these populations in the Colorado and Gunnison rivers are no longer physically isolated. Recommendations are to annually, 1) operate the passageway for 5-1/2 months from 1 April through 15 September, 2) monitor fish use of the Redlands passageway by sorting and enumerating all fish collected in the fish trap, and 3) continue selective passage, that is, remove all nonnative fishes. Also, 4) investigate the extent that sub-adult and adult Colorado pikeminnow use the tailrace between the Redlands Power Plant and Colorado River, especially the period that coincides with pikeminnow use of the Redlands fishway. Finally, 5) no modifications are recommended to the existing within-passageway features or to the overall mechanical operation of the Redlands passageway. xv