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Table 2. Number and sizes (total length [TL]) of captive-reared razorback sucker to be stocked into the Middle Green River in October, 1996. 11 Year class Mean TL (mm) Est. mean TL (mm) Est. number surviving to end 10/95 10/96 of arowina season 1996 1997 1998 1999 2000 2001 1989,90,91 267 350 250 '1:./ 200 160 128 102 82 1993 95 200 200 'J./ 100 80 64 51 41 1994 213 300 300 !/ 150 120 96 77 61 1996 125 250 ~/ 75 38 30 24 19 Total adult fish Q/ 160 224 253 203 1/ Estimated survival rates and mean total length at the end of each growing season are summarized in Table 1. '1:./ A subsamp 1 e of fi sh will be checked for relatedness to adult razorhack sucker used for broodstock development us i ng DNA fi ngerpri nt i ng. The results will be reviewed by the Genetics Panel for a recommendation for the Biology Committee members to consider in making a management decision. 'J./ Between 154 and 196 fish from four family lots of the 1993 year class were stocked into the Middle Green River in October, 1995. The fish stocked in 1996 would increase the number stocked from each family lot to approximately 200 fish to equalize the number stocked per family lot. !/ Reduc i ng the number of fish in one famil y lot of razorback sucker for brood stock development will provide approximately 300 fish for augmentation stocking in the Middle Green River. ~/ Progeny from one pedigreed family lot of razorback suckers produced in 1996 will be stocked into the Middle Green River in October of 1996. Progeny from the potential of 5 additional family lots produced in 1996 will be reared for two years and stocked in October, 1997 (see Table 3). Q/ Razorback suckers generally mature when they are about 425 mm or 17 inches in total length when they would be considered to be adults. 11