1. Reason: When the feeding density is too high, it will lead to insufficient dissolved oxygen and food in the fish tank. At this time, some strong fish will attack other fish to compete for living space.
2. Treatment method: First, fish out a part of the fish in the fish tank and put it into another fish tank with similar feeding environment to reduce the feeding density. Then add oxygen to the fish tank to increase the dissolved oxygen in the fish tank. If the water in the fish tank is turbid, replace one third of the water.
2. Do not feed for a long time1. Reason: Although the mermaid is a kind of hungry fish. But if they are not fed for a long time, they will also be hungry, and at this time they will bite their own kind.
2. How to deal with it: Put a small amount of food into the fish tank to replenish their energy and prevent them from attacking other fish. At this time, you can't give them too much. If you give them too much, they will die. After they adapt, they gradually increase the amount of food.
3. Sick1. Reason: When a mermaid is infected by a parasite, it becomes manic and attacks other fish.
2. Treatment method: Replace one third of the water in the turtle tank, and add a certain amount of salt to sterilize the fish tank to improve the water quality in the fish tank and avoid infecting other healthy fish. Then the diseased fish are fished out, and potassium permanganate is applied to them to treat the diseased fish.