Habits of common freshwater fish?

Fish that live in waters with a salinity content of 0.05% or less. Generally divided into primary and secondary 2 major categories. The world **** has more than 30 orders of freshwater fish, more than 8,400 species, of which there are 11 orders, more than 4,050 species of primary freshwater fish.

China has 13 orders of freshwater fish, more than 850 species. There are more species of freshwater fish in the world in the order of carp (more than 2,420 species), catfish (more than 2,210 species), and the order of fat carp (more than 1,330 species). In China, there are more carp (about 600 species) and catfish (more than 80 species).

Extended information;

Freshwater fish farming species:

1, grass carp

China's one of the four major fish, a typical herbivorous fish. Its rapid growth, feed sources, is China's main freshwater fish farming objects. Because of the special habits of the grass carp, it was transplanted to the world as a pioneer.

2, carp

is one of the most varieties of freshwater fish, the most widely distributed, the longest history of aquaculture fish, cold-resistant, alkali-resistant, resistant to hypoxia, has a strong adaptability, is an omnivorous fish.

3, crucian carp

Carp belongs to a common freshwater fish, omnivorous, mainly to the water plants and plankton for food, because of its fish meat is rich in trace elements and minerals, inexpensive, so it is a gourmet meal on the table, has a strong adaptability.

Baidu Encyclopedia - Freshwater Fish