Koi floating without moving may be sleeping. This is a common ornamental fish, which is relatively large in size. It is best to put it in a pool for artificial breeding, so that there is plenty of space for activities and it is also convenient for viewing. If you use a fish tank, the fish tank must be large enough, and it must be equipped with oxygen pumps, filters and other equipment to ensure sufficient dissolved oxygen in the water and maintain the water quality, which is beneficial to the health of fish.
2. Why do koi fish lie down1. The temperature changes suddenly: If the water temperature is not well controlled when the seasons change, or the temperature of new water is not well controlled when changing water, it will cause a large temperature difference in water, which will stimulate koi fish and cause them to lie flat at the bottom of the tank. At this time, a heating rod should be used to adjust the water temperature to a similar degree to the old water. In addition, when changing water, you can add some hot water to make it similar to the temperature of old water. When changing seasons, the heating rod should be turned on as soon as possible, or covered with insulation film for insulation.
2. Scared: Strangers often walk up and down in front of the fish tank, or suddenly turn on the lights in the fish tank, which will scare the koi, causing the koi to lie flat at the bottom of the tank. If you want treatment, you need to put the fish tank in a quiet place to rest and wait for it to recover. When strangers approach koi, they should move lightly and the light should not be too strong.
3. Water quality deterioration: Unclean water quality, bacteria in fish tank, neglect of water management and irregular water change will lead to poor water quality. If you don't raise water well in fish farming, the constitution of koi will get worse, and it will also make koi easy to lie in a tank. At this time, the koi should be replaced with clean new water, then the water quality should be monitored in time, and the koi should be replaced with water regularly. The filter system can be installed if conditions permit.