Laserfiche WebLink
<br />Table 4. <br /> <br />Survivorship curves used and estimated stocking numbers/age group for Colorado River endangered fishes for a <br />50-mile river reach with respect to desired multi-age group abundance objectives for each species. <br /> <br />>> .......... ... RAZORBACK SUCKER BONYTAIL COLORADO PIKEMINNOW <br />Year Survival Numbers of fish Avg. size Numbers of fish Avg. size Numbers of fish Avg. size <br /> rate @ 475/mi (in - mm) @ 4oo/mi (in - mm) @ lO/mi (in - mm) <br />8 0.8 1303 <br />7 0.8 6 3001 1653 <br />, <br />6 0.8 7,8001 5,2002 2053 17 - 432 <br />5 0.8 9,8001 17 - 432 6,6002 260 15 - 381 <br />4 0.8 12,300 16 - 406 8,2002 14 - 356 320 12 - 305 <br />3 0.8 15,300 14 - 356 10,250 12 - 305 400 10 - 254 <br />2 0.5 30,600 12 - 305 12,800 8 - 203 800 6 - 152 <br />1 0.3 102,100 8 - 203 25,600 4 - 102 2,670 2 - 51 <br />0 0.3 340,300 - 85,400 - 8,900 - <br /> <br />ISum of age groups 5-7 = 23,900; or approximately 475 razorback sucker/mile/50 mile reach. <br />2Sum of age groups 4-6 = 20,000; or approximately 400 bonytail/mile/50 mile reach. <br />3Sum of age groups 6-8 = 1,000; or approximately 10 Colorado pikeminnow/mile/50 mile reach. <br /> <br />24 <br />