1, spiny dolphin

and the river dolphin is a close relative, the abdomen has a large air sac, mostly living in the tropical offshore. The whole body is full of hard spines, and the color is mostly brown.

The spiny lobster is a fish that lives on the bottom of the ocean. The body structure of the spiny dolphin is very special. Below its intestines, there is an air tip that expands backward into a band. Once the spiny dolphin encounters a natural enemy, it immediately rushes to the surface and opens its mouth to inhale air, filling the air tip with gas.

2. River dolphin

The river dolphin is a warm-temperate and tropical offshore demersal fish, inhabiting the middle and lower layers of the ocean, with a few species entering the freshwater rivers. When it encounters external dangers, it makes its whole body float to the surface in the shape of a ball, and at the same time, the small thorns on its skin stand up, so as to defend itself.

Expanded Information

The difference between the two

I. Different species

1. Pufferfish: genus Pufferfish.

2. Pufferfish: genus Puffer.

Second, different aliases

1, puffer fish: bubble fish, blowing belly fish, air drum fish, good fish, street fish, wax head, boats and chrysanthemum fish.

2. Puffer fish: tiger fish.

Three, the distribution of different ranges

1, puffer fish: in the Yangtze River, Pearl River in the spring and summer between the flood season, for the coast and the middle and lower reaches of the river is one of the main fishery objects. In China, there are more than 30 kinds of pufferfish living along the coast from Liaoning to Guangdong***, among which the dark-colored oriental pufferfish enters into the middle and lower reaches of the Yangtze River, Pearl River and other water systems.

2. Spiny dolphin: Tropical offshore and deep sea bottom.

Baidu Encyclopedia - Spiny Pufferfish

Baidu Encyclopedia - Pufferfish