由于市场供需情况的变化，鲜鱼价格逐年下降，而以饲料为主的养鱼成本却逐步上升，淡水渔业开始走向“微利时代”。那么，在这种情况下，如何提高淡水养鱼业的经济效益呢？现据个人实践提出浅见供讨论。一、年初放足大、中、小两种以上规格鱼种，抓住市场缺货价高的时机，轮捕 Due to changes in the market supply and demand, the price of fresh fish decreased year by year, while the cost of feed-based fish farming increased gradually. Freshwater fishery began to move toward the era of “meager profit.” So, under such circumstances, how to improve the economic benefits of freshwater fish farming? According to personal practice put forward my views for discussion. First, the beginning of release enough large, medium and small two or more species of species, to seize the market out of stock high timing, round the catch