1. Reason: The sudden death of guppies may be due to the large temperature difference. Although they have low requirements for the environment, they are sensitive to environmental fluctuations. If the temperature difference between feeding them exceeds 3 ℃, they may die in batches.

2. Solution: Breeders need to control the temperature difference within 2 ℃, so as to avoid sudden death. If conditions permit, a heating rod can be installed to keep the water temperature constant. In addition, when changing water, we should also pay attention to the temperature difference between new water and old water not exceeding 2 ℃.

1. Reason: The sudden death of guppies may also be due to the poor water quality. Although they do not have high requirements for water quality, the poor water quality will breed bacteria and lead to their sudden death.

2. Solution: Breeders need to change water regularly to keep the water quality clean. Under normal feeding, it is best to change water 2-3 times a week. The amount of water changed each time should not be too large, and it should be controlled at one third of the total amount of water. When changing water, pay attention to the temperature difference not too large, and the temperature difference between new water and old water should not exceed 2 ℃.

1. Reason: The sudden death of guppy may also be caused by overfeeding, and their appetite is not large. If the breeder feeds too much food for a long time, it will lead to their sudden death.

2. Solution: Breeders need regular and quantitative feeding, and the best feeding time is 9 am and 3 pm. You can't feed too much food, and you can eat it within 5 minutes at a time.