1. Water change is not timely.
Cause: Long-term non-water changes lead to deterioration of water quality. The fishtail is full of air bubbles, and can not be excreted through water changes. Inside the air bubbles can not be excreted for a long time, which will lead to fishtail rupture rot.
Treatment: The rotten tail in this case is not very serious, as long as the feeding water is replaced in a timely and reasonable manner to ensure clean water quality. After a while, the fishtail will recover.
2. Sudden change of water temperature.
Cause: When changing the water, there is no control of the new water temperature, resulting in sudden changes in ambient temperature. The fish can not adapt to this change, which seriously affects the endocrine function of its body cells, resulting in soft tissue rot at the fishtail.
Treatment: Do not use water with a large temperature difference when changing water. Pump off a quarter of the old water, and then add new water, which can prevent excessive temperature changes. In addition, you can add the right amount of fine salt in the water, which can play a sterilizing effect, which is conducive to the recovery of the fishtail.
3. Wound infection from the fight.
Cause: fish are injured in the process of tearing each other, and the wound is exposed to the water containing bacteria, causing infection, which leads to a rotten tail.
Treatment: Treatment by splashing with 0.01% potassium permanganate solution can effectively inhibit rotting. If the situation is more serious, the method of drug bath treatment. Generally in the water containing furacilin or furazolidone dip fish, each time 20 minutes, can inhibit rotten tail, so that the fishtail to resume growth.
