１全国常规养殖品种的生产现状常规水产品主要为四大家鱼和鲤鱼、鲫鱼等品种,由于价格低而成为家常消费的主要品种。相应的养殖产量也很高,尤其在内陆的省市更是如此。根据１９９８年全国水产年报数据,总结了我国各省市（未含台湾省及港澳地区）四大家鱼和鲤鱼的量占淡水养殖总 1 Production Status of Conventional Breed Varieties in China Conventional aquatic products are mainly four major domestic fish, carp and crucian carp, which have become the main varieties of household consumption due to their low prices. The corresponding aquaculture production is also high, especially in the inland provinces and municipalities. According to the data from the 1998 annual report of the annual aquatic product, the total amount of freshwater aquaculture and freshwater aquaculture in the four provinces of China (excluding Taiwan Province, Hong Kong and Macau)