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<br />------------------- <br /> <br />Table 2. <br /> <br />Survivorship curves used for Colorado River endangered fishes with respect to achieving desired multi-age group <br />b dan b' . l' . d 1 <br /> <br /> a un ce oD1ectives or each specIes as a 11 ts. <br /> RAZORBACK C BONYTAIL II COLORADO I <br />Age SUCKER PIKEMINNOW <br /> Nos.of fish Survival rate Nos. of fish Survival rate Nos. of fish Survival rate <br />2 16,440 0.5 12,000 0.3 -- -- <br />3 8,220 0.6 3,600 0.5 2,680 0.5 <br />4 4930 0.7 2.831f 0.6 1340 0.6 <br />5 3.4501 0.7 1.701f 0.7 800 0.7 <br />6 2,4001 0.7 1.191f -- 560 0.8 <br />7 1,6901 -- -- -- 45~ 0.85 <br />8 .. -- -- -- 38~ 0.85 <br />9 -- -- -- -- 32~ -- <br /> <br />'Sum of age groups 5-7 = 7,540 for razorback sucker (=recovery goal of 5,800 + 30% buffer). <br />2Sum of age groups 4-6 = 5,720 for bonytail (=recovery goal of 4,400 + 40%buffer at Age 4 and 30% at Ages 5 and 6). <br />'Sum of age groups 7-9 = 1,150 for Colorado pikeminnow (=recovery goal of 1,000 + 15% buffer). <br /> <br />19 <br />