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1 As at the other samples of fish ponds, stocked in Humphrey Pond were measured and weighed at the time of stocking and once monthly thereafter during the growing seasons of 1987 and 1988 to monitor growth and condi- tion. Samples of 10-20 squawfish were preserved during each of these efforts for later dietary and parasitological analyses; no razorbacks were preserved. Biweekly limnological data collection was conducted year-round during 1987 and 1988. At the end of the study, we calculated overall survival rates in three of the ponds on the basis of fish collected after the ponds were treated with rotenone. Our plan was to do this in fall 1988, but delays in the permit- ting process forced us to hold the fish an additional year. Fish Chalet and West onds were t t d 12 1989 l d 13 b i p rea e on an , respect ve y; Septem er Humphrey pond, on 11 October. Dead and dying fish were collected each day after treatment until no more could be found. r RESULTS AND DISCUSSION Artificial Spawning Activities We were unsuccessful in our attempts to spawn captive Colorado squawfish ' during summer 1986. Though held in ponds containing natural fish forage, squawfish apparently became stressed from repeated handling. In 1987, a similar problem was encountered in the Colorado squawfish held at Hotch- kiss NFH; these fish were unable to adapt to frequent disturbance and a confined existence. We installed lids on the tanks and set up an automat- is brine dispenser to try to minimize stress. However, despite these and other efforts, the fish would not eat and ensuing weight loss and fungal parasitism eventually culminated in the loss of four fish. We terminated 7