Why does the snakehead turn white (the fin of the white fish turns black)

1, what is the reason why the white fish is black?

2. The color of black map fish is getting lighter and whiter.

3. The fin of the white map fish is black.

4. What if the fin on the white picture is black?

1. food poisoning: the white fish appears black, which may be food poisoning. The breeder needs to stop feeding, find out the cause of poisoning and deal with the symptoms.

2. Bacterial infection: It may also be caused by poor water quality. The breeder needs to disinfect the sick fish first, and then bathe the sick fish with bleach.

3. Vertical scale disease: White fish is black and may have vertical scale disease.

4. The breeder needs to treat the sick fish with nitrofurazone powder or penicillin.