Many migrating Fraser sockeye (both outbound as young smolts and inbound as mature fish) pass some two-dozen salmon farms in the Broughton Archipelago.
许多洄游到Fraser河的红鲑，包括降河洄游的幼鱼和溯河洄游的成鱼，都会经过位于布劳顿群岛的约24个鲑鱼养殖场。
Bighead and silver carp - both native to Asia - have been migrating toward the lakes since escaping from Deep South fish ponds and sewage treatment plants in the 1970s.
原产于亚洲的大头鲤鱼和银鲤鱼，20世纪70年代从南方鱼塘和污水处理厂逃逸以来，已经向五大湖扩散。
Our earliest ancestors learnt how to judge when the seasons would change so that crops should be planted, fish would be plentiful, or when migrating herds would pass some local point.
我们的祖先很早就已经知道如何根据季节的变化，预计渔汛的大小、安排庄稼的种植和收割等，甚至能估算迁徙的鸟群过往的时间。
A birdwatcher can never fly with a flock of migrating birds, but a diver can loiter in a shoal of fish.
因为即便是观鸟者也无法与鸟儿一同飞翔，但潜水者却可以和鱼儿共同在水中畅游。
Migrating up rivers from the sea to breed in fresh water. Used of fish.
从海洋向上游到河流中，并在淡水中产卵的。用于指鱼。
Crafty Sea Lion Befuddles Fish Biologists by Continuing to Munch on Migrating Salmon.
狡猾的海狮不断吞吃回游的三文鱼，让鱼类生物学家十分困惑。
Crafty Sea Lion Befuddles Fish Biologists by Continuing to Munch on Migrating Salmon.
狡猾的海狮不断吞吃回游的三文鱼，让鱼类生物学家十分困惑。
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