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7 <br />:10 <br />On each sampling date, all fishes were enumerated and measured. <br />Larval samples collected from 26 February through 22 April were <br />preserved for laboratory analyses, as were any mortalities. Adult <br />razorback suckers were measured, weighed, and scanned to determine <br />PIT tag identification number, then released into Lake Mohave. <br />RESULTS and DISCUSSION <br /> <br />_• <br />Growth of Cove-produced Razorback Sucker <br />E: <br />J <br />Early post-larval razorback suckers first appeared in samples <br />collected 26 February 1992; these averaged 11.0 mm TL (Table 1, <br />Figure 1) and were about 12 to 15 days post-fertilization (6 to 9 <br />days post-hatch [Minckley and Gustafson 1982, Marsh 1985]). Mean <br />TL increased exponentially over succeeding months, and young fish <br />developed through the late post-larval stage into juveniles during <br />May. Length continued to increase until mid-July, when growth <br />slowed to essentially nil for about 2 weeks (Figure 1), presumably <br />as a result of mid-summer stresses associated with falling lake <br />level, increased temperatures, and reduced dissolved oxygen <br />(Figures 2-4). Growth resumed in early August and TL increased <br />approximately linearly through the final sampling in late November. <br />Average TL attained during the 9-month post-hatch period was 35.4 <br />cm (assuming linear growth: about 4 cm/month or 0.028 cm/day), with <br />the largest individual reaching 39.1 cm (Table 1, Figure 1).