The invention relates to a method for the fish genealogy establishment and the
disease resistance and high yield improved
type selection. By adopting the technologies, such as
group selection, genealogy selection, hybridization and
artificial infection, as well as the sieving of the quick growth genealogy and
disease resistance genealogy, the genealogy which has the advantages of strong
flounder disease resistance and quick growth is selected, and the
selection method for the disease resistance and high yield high quality improved type fish is established. The technology has the advantages of strong pertinence, high selection efficiency, obvious effect, etc. and the survival percent of the disease resistance
flounder fish fry is more than 80 percent, which is increased by 30 percent more than the survival percent of the common
flounder fish fry; the
growth speed of the disease resistance flounder fish fry is also increased by more than 10 percent. The method in the invention opens up a new technical approach for culturing the disease resistance fish variety. As a disease resistance
high yielding variety
selection method applied to the improved fish
type selection, the method is suitable for the popularization and the application on all the cultured fishes, and has important significance and application value in culturing the cultured fish of disease resistance and high yield improved type.