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[[Image:795px-Black-spotted puffer arp.jpg|A puffer fish at Bristol Zoo, Bristol, England.|right|thumb]]

[[Image:795px-Black-spotted puffer arp.jpg|thumb|A puffer fish at Bristol Zoo, Bristol, England.]]

The '''Pufferfish''' may also be known as the blowfish or fugu. It is called the puffer fish because when it is threatened, it puffs up to about twice its normal size by gulping [[water]]. In this engorged state, the puffer fish can swim at only about half its normal speed.

The '''Pufferfish''' may also be known as the blowfish or fugu. It is called the puffer fish because when it is threatened, it puffs up to about twice its normal size by gulping [[water]]. In this engorged state, the puffer fish can swim at only about half its normal speed.