are the species 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 species. Edible freshwater fish are mainly black carp, grass carp, carp, crucian carp and other species. Among them, black carp is mainly distributed in the south of the Yangtze River in China, with fast growth and delicious meat, which is an important fishery resource. Grass carp is a kind of herbivorous fish, which mainly lives in rivers and lakes in plain areas. It grows rapidly and has a wide range of feeding habits, accounting for a large part of freshwater fish farming in China.
Carp is the most widely distributed freshwater fish with the largest number of species, and the history of carp breeding is relatively long. Carp is a kind of omnivorous fish, which is relatively resistant to low temperature and can quickly adapt to water quality. It is a common edible fish in China. Crucian carp is mainly aquatic plants or plankton as the main food, its fish contains a large number of trace elements and minerals, and inexpensive, is an indispensable delicacy on the table of our country.
freshwater fish There are many ways to breed freshwater fish, the most common of which is to raise fish in paddy fields or ponds. The most important thing for fish farming in paddy fields is to prevent fish from escaping, so before stocking, it is necessary to raise the ridge of the field and dig fish ditches so that fish can escape when fertilizing or applying pesticides. Pond fish farming needs to be disinfected first, the best way is to use lime or bleaching powder to dissolve and sprinkle, after putting in the fry, to ensure adequate food, but also reasonable polyculture, timely disease prevention and elimination.
