Longfeng Koi grow 10-20 cm in a year. There are two main reasons for this difference. The first is the growth cycle. The speed of juvenile fish growing into adult fish is relatively fast, but the speed is slow after growing up. Secondly, it contains many kinds, such as food richness, water temperature and water quality, etc. Only when it grows in a good environment can koi grow fast.

1. Water temperature: Don't ignore the water temperature just because Longfeng Koi is a cold water fish and adapts to the wide range of water temperature. If you want it to grow big, the water temperature must be stable at 20-25 ℃. In winter and spring, when the temperature is low, you should turn on the heating rod in time to increase the temperature.

2. Water quality: With good water quality, Longfeng Koi will not get sick, and it will grow faster and bigger. Therefore, we must provide it with a good water quality environment every day. It is best to change the water once every 3-5 days, and change one third of it every time, so as not to destroy the stability of the system in the fish tank.

3. Food: You can feed coarse grains, such as soybean milk and soybean cake. You can feed small fish, shrimp and lean meat. You can also feed apples, cabbages and other vegetables. In this way, dragon and phoenix koi fish are rich in nutrition, so that they can grow bigger.