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.. w a_:,_ <br />a negative effect on spawning. It is hopeful that the maintenance of the <br />remaining brood fish on Dexter NFH will retard spawning and eliminate the <br />transport and temperature problems when fish are spawned next year. Adults <br />reared on this culture station will most probably enhance the propogation <br />program of razorback suckers. <br />The time of year that this species spawn makes it difficult to prepare <br />rearing ponds. When water temperatures are in the lower SOs°F it is diffi- <br />cult to develop predictable zooplankton blooms in ,the ponds. The timing of <br />the blooms with the advent of fry will continue to be a problem. <br />~; <br />_~ <br />i, <br />,; <br />19 <br />