Through the combination of high-tech and conventional breeding techniques, new breeding varieties with excellent characters and strong resistance are selected; Research on new technologies and materials for aquaculture; The research on cryopreservation technology of sperm and fish embryos of endangered aquatic species has greatly improved the breeding level of aquaculture in China.
(1) Study on important aquatic animal germplasm resources; Study on detection, evaluation and germplasm preservation technology of aquatic animal germplasm resources; Assess biodiversity, study the genetic basis of economic traits, and study the function of genetic material; To study the technical ways to preserve aquatic animal germplasm resources at the level of population, individuals, cells and molecules, and to improve the database of natural water and artificial low-temperature germplasm resources and germplasm resources, so as to provide scientific basis for the preservation, protection and utilization of aquatic animal resources.
(2) aquatic biotechnology to carry out basic and applied research of aquatic biotechnology; Carry out research on genetic engineering breeding of aquatic organisms, screen, separate and clone functional genes related to the growth, development, reproduction and disease resistance of aquatic animals, and obtain transgenic aquatic animals with high yield, high quality and stress resistance by transgenic technology; Carry out research on aquatic biological cytology and cell engineering breeding, and carry out research on fish cell culture, cell fusion and nuclear transfer, male and female nuclear development and sex control, cloning technology, and distant hybridization of fish.