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32 DISCUSSION Fish Distribution and Abundance All fish species previously reported from the study area were caught during this study except for the northern pike ([sox lucius) (Seethaler, McAda and Wydoski, 1976). Rare fish distribution and relative abundance in the study area has apparently changed little in recent years. Seethaler, McAda and Wydoski" (1976) found one juvenile squawfish and two subadults in the upper por- tion of the study area (Jensen to Ouray). The Colorado River Fishes Recovery Team sampled the same area in 1976 and caught 10 juveniles and 30 subadult and adult squawfish, and one adult razorback sucker. Vanicek, Kramer and Franklin (1970) sampled below Ouray in 1964-66 and found adult and young-of-the-year squawfish and adult razorback suckers. Holden and Stalnaker (1975) collected in the area from Ouray to Green River in 1967-73 and found all four rare fish, including young- of-the-year squawfish and juvenile humpback chubs. McAda (personal com- munication, 1977) sampled Desolation and Gray canyons in June of 1977 and found approximately 35 squawfish, including juveniles and subadu1ts. No recent change in population status is evident, except that squawfish apparently spawned only in the 'extreme lower portion of the study area in 1977. Thus, the rare fishes appear to be maintainiogpopulations in . - -. ";-, , , . tA@stu~ a,rea. Perhaps the most noteworthy specimens found during the present study were the young-of-the-year razorback suckers. These represent, to our