Fish is a vertebrate in the subphylum Vertebrata of the phylum Chordata and is one of the oldest species. Fish basically live in all freshwater lakes, rivers, and oceans on the earth. Up to now, there are more than 30,000 species of freshwater fish, and there are 2,500 species in China. Most of the fish are cold-blooded, and only a few are warm-blooded. They breathe with gills, and most will die if they leave the water. Fish grow a pair of dynamic little tails, so what are the functions of the tail of the fish? What are the common species?

1. What are the functions of the tail of the fish?

The tail of the fish can maintain the balance of the body, but it needs to be coordinated with the pectoral fins to promote the forward movement of the body and control the direction. If the fish loses its small tail, its body will tilt forward and cannot maintain normal movement.

Different species of fish also have certain differences in tails, for example, the tail of the blue peacock fish can attract the attention of the opposite sex, which is a mating tool.

2. What are the common species of fish?

If fish are classified according to the type of water, they can be divided into freshwater fish and saltwater fish. Let’s take a look at some common species together.

1. Grass carp

It is widely distributed on the streets and alleys, belongs to omnivores, is gentle in nature, likes warm cold water bodies, lives in the middle and lower layers of the water, has strong adaptability, and where there is ice, there will be the trace of grass carp. Grass carp is also a freshwater fish that fishing enthusiasts like very much. The meat texture is tender, and the nutritional value is relatively high, but there are many bones.

2. Carassius carassius

It is widely distributed, living in riverine forests, ponds, ditches, small water bodies, and grass ponds. It is found in Fujian, Yunnan, Jiangxi, Guangdong, Zhejiang, Taiwan, and other places in Southeast Asia. It has more than ten similar species, and can last for three days after being caught. The meat texture is fresh and tender, and it is a famous food in the world.

3. Bream

It is a habitat for its breeding in many areas of East China and South China in China, often active in the lower layer of the water. It likes warm water, is phototropic, a carnivorous freshwater fish, and is found in Fujian, Zhejiang, Jiangxi, Hunan, Hubei, Sichuan, and other places. The meat texture of the bream is delicate and nutritious.

4. Bream

It is widely distributed in China, living in the lower layer of the water. Most areas in East China and South China, as well as East China, all have its living space. It likes warm cold water bodies, is a carnivorous freshwater fish, loves to eat decaying matter, is fierce, and has a strong power. It is commonly seen in East China and South China, and is also distributed in Taiwan and Southeast Asia.

5. Bluefin tuna

Bluefin tuna is a large and medium-sized oceanic international key product for food, with a high value and price. Many of them are made into canned fruits and sold all over the world. Currently, China mainly relies on imports.

6. Cuttlefish

The body shape of the cuttlefish is laterally flattened like a ribbon, in a deep gray color, with the dorsal and pectoral fins light gray, containing very fine black spots. The cuttlefish is quite fierce, but it has high nutritional value, with the effects of nourishing the stomach, nourishing yin and blood, moisturizing the skin, dispelling wind, removing parasites, and replenishing the five internal organs.