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[[Image:fish.jpg|thumb|A puffer fish]]

[[Image:fish.jpg|thumb|A puffer fish]]

'''Pufferfish''' are a distinctive family of tropical and sub-tropical marine fish, also known as blowfish. 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.

'''Pufferfish''' are a distinctive family of tropical and sub-tropical fish, also known as blowfish. 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.

There are about 100 species of puffer fish. Most puffer fish are found in sub-tropical and [[tropical]] marine waters (including [[coral reef]]s) in the [[Atlantic]], [[Pacific]], and [[Indian Ocean]]s. Some puffers live in brackish and fresh water.

There are about 100 species of puffer fish. Most puffer fish are found in sub-tropical and [[tropical]] marine waters (including [[coral reef]]s) in the [[Atlantic]], [[Pacific]], and [[Indian Ocean]]s. Some puffers live in brackish and fresh water.