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水产养殖是我国水网地区农民增收致富的主导产业，特别是随着农业产业结构的调整，水产养殖得到了长足的发展，为繁荣当地农村经济做出了贡献。然而，由于养殖密度的增加、产量的提高以及养殖品种的多样化、种质资源的退化等，使水产养殖病害频繁发生，危害严重。水产养殖动物?
Aquaculture is the leading industry for peasants in our country to increase income and become rich. Especially with the adjustment of the agricultural industrial structure, aquaculture has made great strides and contributed to the prosperity of the local rural economy. However, aquaculture diseases are frequently and seriously endangered due to increased stocking density, increased yields, diversification of cultured species, and degradation of germplasm resources. Aquaculture animals?