China has the world's richest freshwater fish resources, totalling over 700 species, including 40 to 50 species of major cash fish.中国淡水鱼资源居世界之首,淡水鱼类有七百多种,主要经济鱼类有四五十种。
淡水鱼的用法和样例:
例句
一些诸如梭鱼等淡水鱼可以抵御相当程度的酸性。
Some freshwater fish such as pike can withstand levels of acidity.