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recapture rates for these smaller sized :fish were only about 4.8%. The highest percentage (28.6%) of fish were recaptured from the 200-249 mm class, followed by the 400-499 mm group (15.5%), and 250-299 mm group (14.2%). For razorback sucker that had been at large at least 6 months or more following stocking, the 250-499 mm size class accounted for 64.2% of the total number of stocked razorback sucker recaptured from 1997-2001. These size classes comprised only about 8.1% of the total number of razorback sucker stocked (3,549) prior to April 2001. Dispersal following stocking was predominantly downstream from the release site. Based on recapture data, domestic-reared razorback sucker stocked between 1995 and 2001 in the Upper Colorado and Gunnison rivers exhibited downstream displacements shortly following stocking. Downstream displacement following stocking was anticipated, based on results from domestic-reared fish released in other river systems. Of the 84 recaptured razorback sucker that had been at large for 6 months and more, only four were known to have exhibited upstream movement. Three of the upstream movements were in the Gunnison River and one was in the Green River, Utah. For razorback sucker recaptured 6 months or more following stocking, the mean downstream displacement was 50.9 miles compared to the mean upstream displacement of 1.3 miles. Razorback sucker movement was significantly greater downstream (3.3 times) in the Gunnison River (mean of 73.8 miles) than in the Upper Colorado River (mean of 22.1 miles), following stocking. Recaptured razorback sucker were more frequently collected from backwater habitats (65%) than any other habitat type, which is an important observation because most of the monitoring was with electrofishing that sampled shoreline habitats. Electrofishing was the predominant gear used to monitor stocked razorback sucker. For the most part, while different gear types were used to accomplish different objectives among various Recovery Program studies, they were not evaluated to determine which was more effective in collecting stocked razorback sucker. Recommendations include, 1) continuing to stock domestic-raised razorback sucker in the Upper Colorado and Gunnison rivers, and at a size greater than 200 mm; 2) monitoring stocked razorback sucker following release, and at a frequency necessary to determine survival, dispersement, river-reach retention, distribution, abundance, and causes for mortality; 3) continuing to mark razorback sucker stocked in the wild with PIT tags; 4) continuing to measure individual marked razorback sucker to be stocked; 5) monitoring the subsequent reproductive contribution to the adult razorback sucker population; 6) identifying razorback sucker spawning areas; 7) conducting genetic monitoring by collecting the appropriate genetic material or sacrificing offspring from various representative family lots produced from paired mating crosses to ascertain if genetic diversity and variability are being maintained in offspring similar to that of wild stock using the current breeding strategies; 8) utilizing established culture protocols and procedures for harvesting, handling, and transporting domestic-reared razorback suckers prior to and during stocking, particularly emphasizing tempering transport water and adding salt; and 9) determining if site-acclimating domestic-reared razorback sucker by stocking fish into floodplain habitats or holding fish for possibly up to 1 week in riverine backwaters increases survival in the river. xi