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<br />Mortality and Disease <br /> <br />Observed fry and fingerlings mortality to date has been negligible - two <br />or three a \'/eek. Ichthyophthirius \'Ias observed the last week of June. Treat- <br />ments of formalin and malachite green appear to be bringing this under control. <br />The eye lens of a number of the adult razorbacks was opaque. Subsequent <br />examination revealed Myxosoma spores. The only other parasite found on the <br />adults was a few lernaea. <br /> <br />Future Plans <br /> <br />A contract has been let with Arizona State University, Tempe, for a life <br />history study of the razorback, under the direction of Doctor W. L. Minckley. <br /> <br />Plans for distribution of the razorback fry are incomplete. Some of these <br />will be held at the hatchery as long as possible. Possibly for future <br />broodstock. <br /> <br />The future of the squawfish is also undetermined, mostly due to the fact <br />that this is the first time these have been reared in captivity. We plan to <br />hold our present squawfish broodstock as long as possible. Rearing of this <br />year's production to sexual maturity may prove to be imprBctical, due to the <br />probable .ten to fifteen years required. Acquisitions of additional broodstock <br />from the wild is contemplated. <br /> <br />Sunmary <br /> <br />Broodstock of tolorado squawfish and fry of both squawfish ~nd razorback <br />suckers are being held at the Willow Beach National Fish Hatchery. <br /> <br />Eggs for the suckers were hand-stripped from wild stock. <br />squ,)\'Ifish were from natural spawning in a hatchery raceway. <br />just hatched as of this writing, July S, 1974. <br /> <br />.. <br /> <br />Eggs of the <br />Squawfish eggs <br /> <br />257 <br />