. 80 cm fish tanks can raise 3-5 20cm long koi fish. This is a normal feeding density. If the breeder wants to raise more, he can strengthen oxygen and filtration. However, the growth of Koi is relatively fast, when their size reaches 30-40 centimeters, the breeder needs to reduce the number of breeding or replace the vat. Because koi can grow up to 100-150 centimeters, if they are kept in a tank of 80 centimeters, their growth will be limited.
Koi 1. Water temperature: Koi does not require high water temperature, as long as the water temperature is between 20-32 C, they can live. But they are sensitive to temperature differences, so breeders need to use heating rods to keep the water temperature constant.
2. Water quality: Koi fish do not have high requirements for water quality. They all live between 6.5 and 9.0, but the most comfortable PH value for them is between 7.2 and 8.0. Breeders can keep the water quality in this range and change the water frequently to ensure that the water quality is clean.
3. Feeding: Koi is an omnivorous animal. It can be fed with some animal feeds such as red worms, shrimp, nematodes and lean meat, and then with some synthetic feeds. At ordinary times, regular feeding of algae, vegetable leaves and other foods can improve immunity.
4. Space: The adult size of koi can reach 1-1.5 meters. The breeder needs to give them enough space to ensure their better development.
