The fish tank is suitable for raising koi fish, but it must be a big fish tank. Because of the large size of this fish, if the fish tank is too small, the fish will not move. Pay attention to feeding at ordinary times. Because it is gluttonous, it is necessary to control its appetite and avoid eating too much, otherwise it may cause enteritis and other diseases. In addition, it consumes a lot of oxygen, so it needs an oxygen pump to keep oxygenation, so that fish can grow healthily.

1. Fish tank is suitable: First, choose a suitable fish tank. Koi is a large ornamental fish, which has a high demand for oxygen and space. If you want to raise koi for a long time, you can choose a large fish tank. Generally, a 1.2-meter fish tank can raise two 40 cm fish tanks and five 10 cm fish tanks. When they grow up, it is recommended to replace them with larger fish tanks.

2. Filtration and oxygenation: Koi can eat and pull. If koi is raised in a fish tank, it is necessary to change water every day, and a circulating filtration system should be installed, which should be turned on 24 hours, because the filtration system also has oxygenation effect.

3. Maintain water quality: Finally, stabilize water quality. It is easy to adjust the water quality by raising koi fish in fish tank. Koi likes weakly alkaline new water, and the PH value is best controlled between 6.0 and 8.5. Although koi fish does not require high water quality, unstable water quality will make them easy to get sick.