CATDOLL : CATDOLL: What are the cold water economic fish?

1. What are the cold-water economic fish?

Cold water fish: Cold water fish is a type of fish. People call it cold water fish because people know that fish cannot survive in water temperatures above 20 degrees because of their requirements for the living environment, especially water temperature.

According to records, there are about 53 species of indigenous cold-water fish in my country, belonging to 11 families and 50 species, including 16 species of Cyprinidae, 15 species of Salmonidae, 5 species of Acipenser, 4 species each of Cobitidae and Sculpinidae, 3 species each of Lampreydae and Anchovydae, 2 species each of Smelt and Pike, 1 species each of Gadidae and Perch. The cold-water fish introduced into my country are mainly salmonids, including Arctic char, Japanese char, Atlantic salmon, Masson salmon, Chinook salmon, Salmon, Rainbow trout, Silver salmon, Chud whitefish, High whitefish, Concave whitefish, Bigeye lionfish, Chir whitefish, Mountain trout, Golden trout, Rainbow trout, Brook trout, Arctic trout, Salmon trout

2. Introduction to cold water fish farming varieties and economic fish?

The species of cold water fish culture are salmon, trout and sturgeon. Their original living environment is mountain streams and rivers. The water quality in natural waters is good and the water temperature is low.

When choosing water sources for cold-water fish farming, spring water and fresh river water should be selected, and the water temperature should be between 10 and 18 degrees Celsius. Farms that use warmer river water as their water source can add some groundwater to lower the water temperature in summer.

Sturgeon replenishes qi and nourishes deficiency, promotes blood circulation and relieves stranguria

3. Cold water migratory fish?

It should be the Qinghai Huangyu. The Qinghai Lake on the plateau is a cold water lake, and the Huangyu migrates back to spawn.

4. Ranking of economic fish?

Hairtail, large yellow croaker, small yellow croaker and cuttlefish are the four major economic fish species in China. Numerous rivers and lakes provide favorable conditions for the development of freshwater aquaculture. Since 1990, China's aquatic product output has been among the highest in the world, accounting for about 1/6 of the world's total aquatic output.

Zhoushan Fishery is the largest fishery in my country. It is located in northeastern Zhejiang, east of Hangzhou Bay and southeast of the Yangtze River Estuary. The fishing ground covers an area of ​​about 53,000 square kilometers. It is the traditional fishing area for fishermen from Jiangsu, Shanghai, Zhejiang, Taiwan and one city. The main economic fish products are four major fish species: large yellow croaker, small yellow croaker, hairtail and cuttlefish.

5. India’s economic fish?

Indian flathead tuna is an economical edible fish. It lives in the sea area of ​​1 to 60 meters, often active on the coast with muddy bottom in the nearshore area. It is a fish species that lives in the middle and upper water layers and swims fast. It is carnivorous and mainly feeds on fish. Indian flathead tuna has a flat body and a large mouth. The fish body is silvery white, the back is slightly darker than the abdomen, and there are 5 to 8 dark wide horizontal bands on the sides of the body. The ridge scales on the back half of the lateral line are obvious, and there is also a scaleless bare area from the base of the pectoral fin to the front of the anus. The tail fin is deeply forked.

Distributed in the tropical waters of the Indian and Western Pacific, including the southern, western, northeastern parts of Taiwan, as well as the waters of Lanyu and Green Island.

6. Tropical economic fish?

There are many types of guppies, and they are colorful. They are the first choice of fish lovers everywhere because they are easy to raise and love to live. It doesn't matter if the water quality is slightly hard or alkaline. To raise peacocks well, you need to pay attention to daily water changes. Feed more in the seedling stage and less in the adult stage. Guppies also have another alias called "million fish". They reproduce quickly and easily, and many fish lovers can experience the joy of reproduction. In short, guppies are a very easy-to-raise small fish.

7. Sub-cold water fish?

Silver carp is a typical filter-feeding fish, and its natural bait is the plankton in the water. In the process of fish farming, a lot of food residues and fish feces are produced. When these things decompose in the water, the aquaculture water will become "eutrophic", and when the water is eutrophic, a large amount of plankton will be produced. Then, by controlling the number of plankton in the water through the feeding of silver carp, the water quality can be purified. Of course, this is also what we often say, raising silver carp together with other main fish.

8. Is it better to steam or boil fish in cold water?

Stew fish in cold water. Using cold water to stew fish soup makes it more delicious and helps the nutrients to be absorbed. When stewing fish in cold water, the soluble substances in the outer layer of the fish meat will slowly dissolve into the soup during the heating process, releasing the umami flavor. There are many ways to cook fish, such as braised fish, sweet and sour fish, pan-fried fish, etc. You can choose the method according to your personal taste.

9. Indonesia’s marine economic fish?

Indonesia is surrounded by the Indian Ocean on one side and the Pacific Ocean on the other. It is the largest island in the world and due to its large ocean coverage, Indonesia exports the largest amount of seafood. The country is one of the highest fish producers in the world with a production of about 15 million tons. The country exports a variety of fish such as shrimps and frozen fish, and Indonesia's total fish exports amounted to $3.11 billion.

Indonesia is the world's largest tuna producer, and the fishery resources in the waters of Sulawesi and Maluku are extremely rich!

10.What are cold water migratory fish?

Migration is a special form of fish movement. It is an active, regular, directional, clustered, and species-specific horizontal movement of some fish.

Migration is also a cyclical movement, which is repeated every year as the various stages of the fish life cycle progress. Migration is the result of fish's adaptation to changes in external environmental conditions over a long period of time, and it is also an inevitable response to external stimuli when the internal physiological changes of fish develop to a certain extent. Through migration, the living waters of different life periods are changed to meet the needs of living conditions in different life periods, and various important life activities in the life history are successfully completed.