1. The water temperature is too low: The reason why the guppies are unable to give birth may be due to the water temperature being too low. The water temperature can be adjusted to about 35°C to keep the water clean, provide food in time, and help production.

2. The pregnancy period has not yet arrived: it may be because the pregnancy time is not enough. At this time, you need to rest slowly and don't frighten the guppy. It will give birth when the time is up. Finally, male fish can be added to the tank to promote guppy production.

3. Immature embryos: The prerequisite for guppy production is that the embryos have fully developed and matured. If her belly is very distended but she still doesn't give birth, it may be because the embryos haven't matured yet. But this situation is relatively rare.

4. Environmental discomfort: Usually, the delay in production of female fish is due to the influence of water quality and external environment. Newborn fish are very fragile. In order for the baby fish to survive, the female fish will choose to give birth to the baby fish in the most suitable environment for growth.

5. The female fish is vigilant: Pregnant female fish are very vigilant. If it feels it is in danger, it will hold back and not give birth.

6. Small fish are eaten: The female fish gives birth to small fish for the first time and has no experience. The newly born young fish, which are a few millimeters long, may be eaten by the big fish as bait, and the female fish is the first to give birth to small fish. Only a dozen are produced at a time, and the quantity is relatively small and difficult to detect without careful attention. If the small fish are eaten, the farmer may mistakenly believe that production has not yet occurred.

Premonitions of guppies giving birth to small fish:

1. Generally speaking, among guppies, the female fish is larger. When a guppy is about to give birth, its belly is bulging. Above the anus, in the brighter part of the belly, there will be fetal spots. The darker the fetal spots, it means that the guppy is about to give birth.

2. When a guppy is about to give birth, it will usually stay in some relatively hidden corners, mainly because it needs to avoid predators. A female guppy that has just given birth to a baby needs a period of rest. It is best not to touch it artificially. At this time, the guppy likes to be alone and will chase and bite fish that come close to it. This is to protect the young.

3. Judging from the shape of the reproductive opening, before the female guppy is about to give birth, the reproductive opening on the abdomen will appear more obviously protruding, while the bottom and root of the abdomen will be smoother, and the entire shape will be Showing a non-standard right angle, this is a precursor to guppy production.