同样的现象在六须鲶鱼引入西班牙埃布罗河时也发生了。
The same phenomenon occurred when wels catfish was introduced into the Ebro River in Spain.
沿着尼日尔河分布着各式家庭，那里驾着划桨船的渔夫撒网捕捞鲶鱼和鲤鱼。
Families live in mud-built huts along the Niger River, where fishermen in paddle-powered boats cast nets for catfish and carp.
美国的鲶鱼养殖户几十年前引进了亚洲鲤鱼用来消灭池塘中的藻类，一部分亚洲鲤鱼逃到野外并游向密西西比河。
Catfish farmers in the U.S. imported Asian carp decades ago to eat up the algae in their ponds; the fish slowly escaped into the wild and have been making their way up the Mississippi River.
应用推荐