随着水产品供给量增多,市场的极大丰富,水产品价格稳中有降,人们生活水平不断提高,四大当家鱼已成为历史。为满足日益增长的市场需求,获取更高效益,生产者不断调整养殖结构,扩大了对名、特、优水产品的养殖,海水养殖品种从过去单一的石斑鱼养殖发展到鲈鱼、真鲷、黑鲷、红鳍东方鱼屯、美国红、大黄鱼等;淡水养殖增加了河蟹、罗氏沼虾、美国大口胭脂鱼,异育银 With the increase in the supply of aquatic products, the market is greatly enriched, the price of aquatic products is steadily declining, and people’s living standards are constantly improving. The four big names of fish have become history. In order to meet the increasing market demand and obtain more benefits, the producers constantly adjusted the breeding structure and expanded the breeding of famous, special and superior aquatic products. The development of mariculture species from single grouper farming to seabass and red sea bream , Black sea bream, redfin Oriental fish Tun, the United States red, big yellow croaker, etc .; freshwater aquaculture increased crab, Macrobrachium rosenbergii, the United States bigmouth, alligator silver