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APPENDIX A GUIDELINES FOR DISPOSITION OF CAPTIVE-REARED ENDANGERED FISH A. Background. Many propagation activities may produce more fish than are needed to meet specified requirements. This additional production allows the hatchery manager to compensate for unknown or unpredictable attrition rates to ensure that specified requirements are met. These guidelines provide the protocol for disposition of such fish. Planned captive propagation minimizes the production of endangered fish that will be excess to Recovery Implementation Program (Program) needs and reduces demands on resources (i.e., people, funds, and space). The number of endangered fish that are reared for Program needs depends upon: 1. Captive propagation goals and objectives 2. Breeding strategy or mating system used 3. Fecundity of the endangered fish 4. Anticipated mortality during culture 5. Method used to culture endangered fish 6. Uncertainty of production during captive culture, and 7. Availability of culture facilities "Stocking Plans" and annual Program should be prepared laboratory studies so that planned production. This i endangered fishes are needE 5 years are needed to prod years are needed to producE squawfish. "Scopes of Work" that are required by the well in advance of projected field or endangered fish needs can be incorporated into s especially important if large or mature d for the studies. For example, approximately ce mature bonytail and humpback chubs and 7 adult razorback suckers and Colorado All endangered fish propagation will be done in accordance with Program "Genetics Management Guidelines" (i.e., philosophy, goals, and general procedures for maintaining genetic diversity similar to wild stocks), "Genetics Management Plan" (i.e., classification of endangered fish species or stocks and establishing priorities using information on status and trends), and "Stocking Plans" (i.e., specific details on species, specific stocks of fish, numbers of fish, size[s], time of stocking, and method[s] to evaluate stocking). All wild endangered fish used to develop broodstocks for captive propagation will be released back into the wild when pedigreed family lots of their progeny have been established. B. Procedures for Disposition of Captive-Reared Endangered Fish. Production targets are based on the numbers of fish that were identified for specific Program needs. Under normal operating procedures, unfit fish (e.g., hybrids, genetically deformed, those with untreatable contagious diseases, etc.) will be euthanized following accepted protocol of the fisheries profession. Fish identified as surplus to Program requirements 15