鱼种质量是水产养殖业获得稳产高产的重要物质基础。我国目前海、淡水养殖品种尽管越来越多,但基本上都是野生型,未经家化过程的遗传改良,因而除保留了野生型鱼类对环境温度等变化适应较强的优点外,更多地表现为对养殖环境变化的不适应性。俗话说“种好一半收”。在养殖中,必须 The quality of fish species is an important material basis for stable and high-yield aquaculture. Despite the increasing number of marine and freshwater aquaculture species in our country, they are basically wild type and have not been genetically improved by domesticization process. Therefore, besides retaining the advantages of wild-type fish in adapting to changes in environmental temperature and the like, More manifested as changes in the aquaculture environment does not adapt. As the saying goes “kind of good half income.” In breeding, must