1. Environmental discomfort: The delay of guppies may be caused by environmental discomfort, and their requirements for the environment are not high. However, if the comfortable living environment of guppies cannot be guaranteed during production, its normal production will also be affected.

2. Before the production date: Guppies are delayed and may not be produced. They are oviparous fish, and their eggs need to develop into small fish in the body before they can be produced. Under normal circumstances, guppies need to be pregnant for about 20 days before giving birth.

3. Dystocia: The delay in giving birth of guppies may also be caused by dystocia, and their production requires great physical strength and energy. Especially the guppy produced for the first time, it is easy to have dystocia.

1. Adjust the environment: guppies are sensitive to environmental fluctuations. If breeders want to promote their production, they can first raise the water temperature by 2 ℃, and then immediately raise the temperature after the temperature drops by 2 ℃. Use the change of temperature to stimulate their production. You can also change a small amount of water, which can also stimulate their production. It can also impact the fish with tiny water flow, and it can also give birth.

2. Artificial midwifery: If guppies have dystocia, the breeder can also gently squeeze their abdomen with his thumb. As long as the small fish blocked around the reproductive mouth are squeezed out, they can produce normally.