At the first sign of trouble, schooling fish swim as close together as they can get.

一旦发现危险的迹象，鱼群就会尽可能地游近彼此。

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Next time you are watching your pet fish from outside the tank, perhaps you should feel close to them—they may remember who you are.

下次当你在鱼缸外观察你的宠物鱼时，也许你应该感到它们跟你很亲近——因为它们可能会记得你是谁。

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A close relativeof coral and jellyfish, anemones are stinging polyps that spend most oftheir time waiting for fish to pass close enough to get ensnared intheir venom-filled tentacles.

它一生大部分时间都在等待经过的鱼类靠近，再用它充满毒汁的触须捕捉。

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He says some kinds of reef fish are close to disappearing forever.

VOA: special.2010.08.10

Farming fish close to shore often causes contamination of water and seabeds, so the company has partnered with fish producers to devise a remotely-controlled fish pen that can drift with currents in the open sea.

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We end up landing and releasing close to 30 fish.

FORBES: Scenes from the 2010 Montauk Redbone Fishing Tournament

The system has worked well in reviving the depleted species: This year recreational fishermen are reporting record tuna catches, with some landing fish close to shore as big as 260 pounds.

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