How do you say fish in English?

Fish is a vertebrate living in water and one of the important representatives of aquatic organisms. This fish is streamlined and suitable for swimming in the water. It usually has the characteristics of scales, fins and lateral lines used for swimming. Fish plays a vital role in the ecosystem, and it is also an important food source and trade variety in people's life and economic activities.

There are many kinds of fish, from small microscopic fish to big whales and sharks. Fish also has high nutritional value. It is a kind of food rich in high-quality protein, animal fatty acids and vitamins, which is beneficial to human health.

Fish is an aquatic animal, widely distributed in oceans, rivers, lakes, ditches and groundwater on all continents. There are about 30,000 different kinds of fish. These fish are divided into several categories, including bony fish, cartilaginous fish, lantern fish, jawless fish and so on.

1. teleost. Bone fish is the largest species of fish, with more than 25,000 different species. Their scales are made of calcium and hard.

2. Cartilaginous fish. This kind of fish accounts for a large share in the ocean, and there are about 950 different species. Their scales are composed of cartilage, which is soft. Cartilaginous fish include sharks, ghost dumplings, rays and so on.

3. Bottled fish. Bottlenose fish live in the deep sea and have a special structure, that is, a pair of red luminous organs, which are used to trap prey. They have a variety of shapes, about 300 kinds.

4. jawless fish. Jaw-less fish has no chewing function and has a unique oral structure compared with other fish.

5. Sunfish. Mola is the most beautiful and popular family of freshwater fish. Their fins are very large, their bodies are round, and they are usually brightly colored and lively. One kind of mola fish is even known as "the most beautiful fish in the world".

6. Spiny-tailed Sparidae. The body of Sparidae is flat and has obvious lateral lines. The body has five to seven black prominent horizontal bands. Fins are divided into dorsal fin, gluteal fin and caudal fin, among which caudal fin has thorns.

In addition to the above, there are tuna, puffer fish, lobster, crab, whale and so on. These fish play a very important role in people's lives. Different kinds of fish have their own characteristics and habits, which plays a vital role in understanding the ecosystem of fish communities and developing and utilizing fish resources.