要提高水产养殖效益,水产专家建议积极调整品种结构,多养以下几类较有养殖前途的水产品种:1.主养怕冷的品种:即养热带鱼、虾,如罗非鱼、淡水白鲳、巴西鲷以及罗氏沼虾、南美白对虾等,这些品种肉质较好。有的颜色艳丽,还可做垂钓对象。同时养殖条件要求不高,既可单养,也可混养,养殖周期短、见效快。 To improve the efficiency of aquaculture, aquaculture experts suggest that we should actively adjust the variety structure and raise more aquaculture species with more aquaculture prospects: 1. Main cold species: tropical fish and shrimp, such as tilapia, freshwater pomfret , Brazil sea bream and Macrobrachium rosenbergii, white shrimp, etc., these species better meat quality. Some bright colors, but also do fishing objects. At the same time less demanding farming conditions, both monoculture, but also polyculture, short breeding cycle, quick.