The distribution characteristics of freshwater fisheries in China and the main fish species

The most developed area of freshwater fishery in China is the middle and lower reaches of the Yangtze River Plain.

Yangtze Plain, Middle and Lower, is located in southern China. It usually refers to the east of the Three Gorges of the Yangtze River in China, the coastal strip plain in the middle and lower reaches of China, which is one of the three major plains in China, spanning 7 provinces and cities in China, including Hubei, Hunan, Jiangxi, Anhui, Jiangsu, Zhejiang, and Shanghai.

Due to the abundance of rivers and lakes and paddy fields, the freshwater resources are very abundant, making it the most water-abundant area in China. Such a situation provides sufficient space and favorable environment for freshwater fish farming, which is known as the water town and the land of fish and rice.

As the most developed area of freshwater fisheries, there is a wide variety of fish. In addition to the common four major carp (herring, grass carp, silver carp, bighead carp), there are carp, crucian carp, bream, catfish, squid, bream, bream, eel, etc., and the sturgeon, anchovy, mackerel and so on in the Yangtze River, the largest freshwater river in China, have a large output.

Introduction to freshwater fish

Broadly speaking, it refers to a fish that can live in freshwater with a salinity of 3 parts per thousand. In a narrow sense, it refers to fish that have only a juvenile or adult stage in their life cycle, or that must spend their entire life in freshwater.

There are about 26,000 species of known fish in the world, and about 8,600 species of freshwater fish. There are nearly 3,000 species of fish in China, including more than 1,000 species of freshwater fish.

China's fisheries are divided into two categories: freshwater fisheries and marine fisheries. Freshwater fishery is the use of inland freshwater rivers, lakes, ponds, reservoirs and other undertakings engaged in fishery production, it can be mainly divided into freshwater breeding, aquaculture and freshwater fishing; The noisy marine fishery refers to the production of marine fishing and marine aquaculture, of which marine aquaculture can be divided into three categories: fish and shrimp aquaculture, shellfish aquaculture, and algae indiscriminate aquaculture.

The most developed areas of freshwater fisheries in China are (d).

a.Coastal areas of the Liaodong Peninsula

b.Southeastern coastal region

c.The middle and lower reaches of the Yellow River

d.The middle and lower reaches of the Yangtze River

Fisheries refers to the social production sector that catches and cultivates fish and other aquatic animals and aquatic plants such as seaweed for aquatic products. Generally, it is divided into marine fisheries and freshwater fisheries. Fisheries can provide food and industrial raw materials for people's livelihood and national construction.

The social production sector that develops and utilizes water areas, collects, fishes, and artificially cultivates various aquatic animals and plants of economic value in order to obtain aquatic products.

It is an important part of agriculture in the broad sense. According to the water area, it can be divided into marine fishery and freshwater fishery; According to the characteristics of production, it is divided into aquaculture and fishing. Fisheries in a broad sense also include:

Direct pre-production sector of fisheries. Production and ** departments of fishing vessels, fishing gear, fishing instruments, fishing machinery and other means of production for fishery purposes.

Direct post-fishery sector. Departments such as storage, processing, transportation and sales of aquatic products. The main characteristics of fishery production are based on various waters, with renewable aquatic economic animal and plant resources as the object, with obvious regional and seasonal characteristics, and the primary products have the characteristics of freshness, perishability and commodity.

Fisheries are an important sector of the national economy.

The rich protein content provides 6% of the world's total consumption, 24% of the consumption of animal protein, and can also provide high-quality fertilizer for agriculture, concentrate feed for animal husbandry, and important raw materials for food, medicine and chemical industries.

With more than 18,000 kilometers of coastline, vast continental shelves and tidal flats, 200,000 square kilometers of freshwater waters, and more than 1,000 species of aquatic animals and plants with high economic value, there are good natural conditions and broad prospects for the development of fisheries.