How to raise fish by ancient methods in winter?

When experts answer questions about ancient fish farming, they will dig a big pit in winter, put the fish tank in the pit, and then bury it, leaving only one tank mouth.

This can make the water temperature of the fish tank close to the ground temperature, keep it relatively stable, and will not change as drastically as the temperature. When it is particularly cold, a lid will be added to the fish tank.

Ancient fish farming generally used containers such as clay pots, stone pots, sand pots and porcelain pots, which were thick and easy to keep warm.

Advantages and disadvantages of ancient fish farming 1. Advantages: The advantage of ancient fish farming is that fish can receive enough light, because fish tanks are placed in sunny places in the yard, so fish can receive more sunlight and their body color will be more vivid.

2. Disadvantages: Ancient fish farming also had many disadvantages, such as not being able to control the water temperature and quality well and the surrounding environment well. If the temperature changes suddenly, the fish may have more discomfort. Moreover, fish farming in ancient times was outdoors, and there was a lot of silt and dust in the fish tank.