1. Reason: When the oxygen content in water is insufficient, koi fish will not breathe smoothly, thus jumping out of the water to breathe fresh air.
2. Treatment method: Use oxygen pump to input enough oxygen into water to ensure sufficient dissolved oxygen in fish tank.
2. There are parasites on the body1. Reason: When the water in the fish tank is no longer fresh, bacteria are extremely easy to breed in the water. When there are too many bacteria in the water, koi fish are extremely easy to breed bacteria. If they are uncomfortable, they will jump out of the water.
2. Treatment method: Change water in time and add enough crude salt to water. However, it should be noted that you should not change too much water every time, and you can change about one quarter to one third of the water every time. To change the water, use the water trapped in advance, that is, dry the fresh tap water for several days.
3. The breeding density is too high1. Reason: When the breeding density is too high, their living space is not enough, and they will feel very uncomfortable, so they will jump out of the water.
2. Treatment method: Change them into a larger fish tank to ensure sufficient growth space.