1. Reason: The fish just arrived in a new environment, the body has not yet adapted to the phenomenon of fading. And when fish are frightened, they will also fade their bodies.
2. Treatment: This situation is generally not too serious, such as the fish to adapt, the body color will slowly recover. When changing the water, keep three quarters of the old water and add new water, so that the fish will not be uncomfortable. If the fish are fading due to fright, it is better to provide a quiet environment when raising them in peacetime. When the fish is no longer afraid, the body will slowly recover.
1. Reason: In the process of feeding, there is no red pigment supply for the fish, which will lead to the decrease of pigment content in the body and make the red color of the fish lighter.
2. The treatment method is to increase the pigment content in the fish. It can be injected with red pigment to increase red, or fed with feed containing red pigment. After a period of time, the pigment in the fish increases, and you can see that it slowly changes back to red.
1. Cause: White spot disease caused by Ichthyophthirius infection. Ichthyophthirius infestans parasitize on the body surface or gills of fish, and breed in large quantities, resulting in disease of fish, thus lightening the color of fish.
2. Treatment: Isolate the diseased fish, raise the water temperature to 30 ℃ and sterilize it with 2% salt water. After the little melon insect is killed, the disease of the fish will gradually get better.
