日本淡水捕捞的主要对象是蚬类、香鱼、鲫鱼、鲤鱼、鳗鱼、鲑鳟、虾类、若鹭等。六九年其产量达11.2万吨。其中河川7.2万吨,占总产量的64％,湖沼年产4万吨。在淡水捕捞的总产量中,蚬类4.9万吨,占44％,其它香鱼为1.03万吨,鲫鱼0.94万吨,鲤鱼0.41万吨,鳗鱼0.32万吨,鲑鳟0.32万吨,虾类0.28万吨,若鹭0.21万吨。日本的主要河川有十条。其中利根川产量最高,六九年为4.05万吨,占全部河川总产 Japanese freshwater fishing is mainly targeted for catfish, sweetfish, crucian carp, carp, eel, salmon, shrimp, such as egrets. In sixty-nine its output reached 112,000 tons. Among them, the river is 72,000 tons, accounting for 64% of the total output, with an annual output of 40,000 tons. Among the total freshwater harvesting production, 49,000 tons are catfish, accounting for 44% of the total, 10,300 tons of other sweetfish, 9,400 tons of crucian carp, 41,100 tons of carp, 32,200 tons of eel, 32,200 tons of salmon and 0.28 Tons of tons, if the heron 0.21 million tons. There are ten major rivers in Japan. Among them, Li Genchuan produced the highest amount of 40,500 tons in 1960, accounting for the total output of the rivers