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For a large-bodied, long-lived species like the Colorado squawfish, Razorback sucker, Humpback <br />chub and Bonytail, a substantial time should pass before a population should be considered viable <br />(Belovsky 1987). Based on species life history and longevity, the aspects of maintaining a viable <br />population identified within this analysis should persist at least through one generation time or 50 <br />years for Colorado squawfish and Razorback sucker and 30 years for humpback chub and <br />Bonytail. In this light, habitat and in-stream flow conditions necessary to meet life-history <br />requirements should persist at least through a five year period after target population sizes are <br />' achieved. After that point in time the species protective status should be reassessed. <br /> <br />1 <br />1 <br /> <br /> <br />1 <br /> <br />1 <br />t <br /> <br />1 <br /> <br />1 <br />1 <br />28 <br />1