1. What are the signs of koi fish's cylinder jump? 1. Water quality deterioration: koi fish will jump around in the tank, indicating that the water environment is not very good, and the water quality will deteriorate if it is not changed for a long time. Therefore, it is necessary to change the water in time to improve the water condition.
2. Low dissolved oxygen: koi fish breathes in water. If the dissolved oxygen is too low, he will jump, so he needs to fill the water with oxygen.
3. Temperature discomfort: Although koi fish is a wide-temperature fish, it will also be affected by temperature discomfort, so it is necessary to control the temperature and heat it properly in winter.
Second, why did koi fish jump? 1. Environmental discomfort: The newly bought koi fish may jump because he doesn't adapt to the new living environment. When they enter a new environment, they will feel uneasy, afraid and want to escape, so they will jump. The breeder needs to cover the fish tanks, then keep the surrounding environment stable and wait for them to recover on their own. During the recovery period, the breeder needs to stop feeding.
2. Space is too small: koi fish is relatively large. If the feeding density is too high, it will affect their activities, which will lead to pot jumping. Or if there is too little water in the fish tank, they will jump because of the restriction. Farmers need to reduce the breeding density or replace large fish tanks to ensure their normal activities.
3. Too little oxygen: koi fish has a great demand for oxygen. If there is not enough dissolved oxygen in the water, they will jump because of lack of oxygen. Prepare an oxygen pump to inject oxygen into the fish tank and replenish dissolved oxygen. However, it should be noted that although there is a high demand for oxygen in koi fish, breeders cannot use too much oxygen. Usually, the dissolved oxygen in water can be well controlled, preferably 5-7 mg per liter.