1. Reason: The white rot of guppy may be caused by white spot disease, and the main reason for this disease is that the water temperature is too low or the temperature difference is too large. Because the cause of white spot disease is small melon worms, which can only grow in low temperature environment, it is easy to suffer from white spot disease when the water temperature is too low.

2. Treatment: Breeders can use Baidianjing to give them a medicinal bath. During the use of Baidianjing, it is best to raise the water temperature to above 26 ℃, which can inhibit the growth of small melon worms.

1. Reason: The whitening and rotting of guppy may be caused by bacterial invasion due to lack of timely treatment after trauma. Breeders are easy to rub on when fishing. If they are infected after injury, their bodies will rot and turn white.

2. Treatment: Breeders need to use potassium permanganate to smear their affected parts, or use potassium permanganate solution to take a medicated bath for sick fish. During treatment, it is necessary to keep the water clean to avoid re-infection after trauma.

1. Reason: The white rot of guppy may also be caused by water mold, which is caused by poor water quality. Guppies suffering from water mold will have a layer of white flocs on their bodies, and if they are serious, they will rot.

2. Treatment: Breeders need to isolate diseased fish immediately, because water mold is contagious to some extent. Then use malachite green solution to take a medicated bath for sick fish once a day for 10-15 minutes each time.