CATDOLL : CATDOLL: What are the special fish species farmed in freshwater and marine waters in my country?

1. What are the special fish species farmed in my country’s freshwater and marine waters?

Generally speaking, freshwater fish are easier to raise than marine fish. For marine fish, you first need to invest a lot of money to get a large tank and equipment. In addition to ordinary filtering equipment, oxygen equipment, and digestive system equipment, you also need protein separation equipment, seawater conditioning equipment, seawater composition measurement equipment, etc. Generally, a complete set of equipment costs between 20,000 and several million. After the equipment is ready, the biggest daily expense is the preparation of seawater. You have to change the water every now and then and buy a lot of sea salt and sea element to artificially prepare the seawater before putting it into the tank. Freshwater fish are generally divided into native fish, tropical fish, and artificial fish. Tropical fish are a kind of native fish, and the water temperature needs to be heated to keep at around 28 degrees. Native fish and tropical fish generally need landscaping, that is, buying a lot of bottom sand, water plants, and sunken wood to arrange the environment for the fish to grow, in order to prevent the fish from fighting and not adapting. Artificial fish are divided into goldfish and koi. Koi need a large place and a large pond to be raised, while goldfish can generally be raised in a tank of about one meter. Moreover, koi and goldfish do not need to be heated, and can survive in water temperatures of over 30 or below the ice. Therefore, the best freshwater fish to raise are goldfish.

2. I have a cement pool at home, which is 2 meters long, 1.2 meters wide and 0.9 meters deep. It has good sunlight. I would like to ask if I can raise water fish? If so, can...

If it is semi-industrial breeding, 10 ornamental crucian carp-sized fish, combined with ornamental aquatic plants, will be enough.

If it is for ornamental fish breeding, such as giant salamanders, sturgeons, etc., it needs running water, plus air stones for oxygenation or microporous aeration tubes for oxygenation, and it is best to use auxiliary oxygenation methods such as rockery water wheels. Then this kind of pond is best for breeding special fish? Sorry, I haven't heard of it.

3. What are the types of freshwater fish and how to breed them?

Freshwater fish are divided into edible freshwater fish and ornamental freshwater fish. Common edible freshwater fish include black carp, grass carp, silver carp, bighead carp, etc. These fish have high edible value and are relatively common, and are deeply loved by the Chinese people. Common ornamental freshwater fish include goldfish, koi, seven-star knife fish, angelfish, thrush, zebrafish, tiger barb, etc. These fish are highly ornamental and are mostly kept in fish tanks or aquariums for people to watch. 1. What are the types of freshwater fish? Freshwater fish are divided into edible and ornamental freshwater fish. Ornamental freshwater fish mainly include goldfish, angelfish, zebrafish, seven-star knife fish, koi and other varieties. Edible freshwater fish mainly include black carp, grass carp, carp, crucian carp and other varieties. Among them, black carp is mainly distributed in the south of the Yangtze River in my country. It grows faster and has more delicious meat. It is an important fishery resource. Grass carp is a herbivorous fish that mainly lives in rivers and lakes in plain areas. It grows rapidly and has a wide range of diet. It accounts for a large proportion of my country's freshwater fish farming.

Carp is the most widely distributed and diverse freshwater fish, and the carp has a long history of breeding. Carp is an omnivorous fish that is relatively resistant to low temperatures and can quickly adapt to water quality. It is a common edible fish in my country. Crucian carp mainly feeds on aquatic plants or plankton. Its meat contains a large amount of trace elements and minerals, and it is inexpensive and of good quality, making it an indispensable delicacy on the Chinese table.

2. How to raise freshwater fish There are many ways to raise freshwater fish, the most common of which is to raise fish in rice fields or ponds. The most important thing about raising fish in rice fields is to prevent the fish from escaping, so before stocking, the ridges need to be raised and fish ditches need to be dug so that the fish can hide when fertilizing or spraying pesticides. Pond fish need to be disinfected first, and the best way is to dissolve and spray lime or bleaching powder. After putting in the fry, ensure that there is enough food, and mix them reasonably, and prevent diseases and eliminate pests in time.

4. Which fish are special aquatic products?

In a broad sense, all aquaculture species except the four major carps are special aquatic products.

The special aquatic products we are talking about now mostly refer to the rare, small and high-quality species that are farmed locally, such as sturgeon, salmon, elephant trunk clams, turbot and sweetfish.