The stomach of puffer fish is very elastic, and the skin of the abdomen is very loose, so you can inflate yourself by inhaling. Because the body has become several times the original size, it can scare away predators and thus achieve the effect of self-protection. There are also some species with thorns that stand up when they swell, making it difficult for predators to bite.
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Life habits of puffer fish
Pufferfish are distributed along the coast of China and the western part of the North Pacific Ocean, and are also widely distributed all over the world. Most of them live in the sea, and some are fresh water. Pufferfish are located in temperate, tropical and subtropical waters of China, mainly distributed in the Yellow Sea, Bohai Sea, East China Sea, South China Sea and offshore rivers.
The puffer fish swims very slowly. Every year around Tomb-Sweeping Day, puffer fish swim from the sea to the middle and lower reaches of the Yangtze River. Some species migrate upstream to rivers to lay eggs during the breeding season. For example, Black-striped Oriental can migrate along the Yangtze River to Dongting Lake to lay eggs, and can also settle in the Yangtze River and the same rivers and lakes. It is an important fish resource in China, mainly living in the middle or bottom of water, and belongs to river-sea migratory fish. The puffer fish's diet is mixed, mainly eating clams, oysters and sea urchins.