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snails, and terrestrial insects that became trapped and drown in the water. Analysis of stomach samples, and study of all possible food sources in the pond should be initiated in the future. During the razorback sucker's internment in the pond, water temperatures varied from 13-250C (mean=20.80C). Dissolved oxygen levels varied between 6.2-13.1 ppm, with a mean of 9.2 ppm (Table 6.). On 15 September, the water level in the pond was pulled down, and fish removal began. All fish were removed from the pond by 22 September, a total of 1323 fish (88.2% survivability). The missing 177 fish (11.8%) were probably lost more to predators than other causes. A problem with cormorants using the pond was found during the summer months (June-August). Other predators observed in the pond included great blue herons, mergansers, water snakes, muskrats, and frogs. In contrast, a count of the fish used in the feed trial's during this same time period yeilded only 258 fish (43% survivability). After being seined from the pond, the fish were put into indoor holding tanks. During 21- 22 September, the fish were weighed, measured, and fin-clipped. Individual total lengths for the fish were taken using a metric measuring board and recorded in millimeters. The fish were weighed in lots of 20 fish to the nearest gram, the exception being one lot of 11 fish. All fish were weighed on a 1,000 x 2 gram platform scale. All fish that were weighed and measured , were also fin-clipped. Fin-clipping involved removing the right pelvic fin at it's insertion with the body of the fish, using heavy duty cuticle clippers or sewing scissors. No antibiotic solutions or anesthesia were utilized. Of the 1323 fish removed, 26 were placed in an aquarium at the CRFP office in Vernal, Utah. These fish were never weighed or measured. Four fish were sent to Dr. W.L. Minckley at Arizona State University for morphological, DNA,