鱼群在前往上游产卵的途中被捕获。
Fishes are caught when they are on the way upstream to lay eggs.
这条鲨鱼围绕着鱼群游动。
大多数鲸鱼群居。
吵闹的响声很快赶跑了鱼群。
跟踪记录鱼群中的个体很困难。
追寻野生的鱼群，在溪水上漂浮。
不过真实的鱼群并不只是转圈游动。
最近，他用计算机模仿了鱼群的行为。
Most recently, he has modelled the behaviour of shoals of fish.
鱼群为产卵而疯狂地向上游挤进。
那个鱼群周围很可能有一条大的，他想。
表面如此，但是真正的鱼群是不会螺旋状游动的。
That is a start.But real shoals do not exist to swim in circles.
我在那些鱼群中游泳，他们似乎并 不在意。
粘鱼群在全世界的海洋都能找到，通常在浅水区。
Blennies are found throughout the world's ocean, usually in shallow water.
将一个四周贴有某种彩色标记的小瓶子沉到鱼群中。
A small bottle with a coloured sign round it was lowered among the fish.
我们肯定这些将不会导致更多的鸟类和鱼群死亡。
We sure hope this won't lead to more falling birds and dying fish.
这些手指大小的鱼儿结成巨大的鱼群，以蒙蔽捕猎者。
The finger-size fish form large schools to try to confuse predators.
已经有证据证明，自从六十年代中期，这种鱼群已有变化。
There is already evidence that such fish population changes have occurred since the mid-1960s.
已经有证据证明，自从六十年代中期，这种鱼群已有变化。
There is already evidence that such fish population changes have occurred since the mid-1960s.
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