When guppish breeds, it is enough to prepare a fish tank of about 12-18 liters, because their size is not very large, and their space requirements are not high, and their territorial awareness is not strong, so the space of the breeding tank does not need to be particularly large. Under normal circumstances, a breeding tank of about 12-18 liters can be enough for 10 guppies to mate and breed. However, if breeders want to breed more than one, they should choose the size of the breeding tank according to the number of breeds.

1. Choose parent fish: If breeders want guppies to reproduce, they should choose mature parent fish. When choosing parent fish, it is best for breeders to choose some bright-colored and flawless ones, so that the offspring will be better.

2. Prepare breeding environment: The water temperature of guppy breeding should be controlled between 26-27 ℃, and the PH value should also be controlled between 7.2-7.4. The water in the breeding tank should also be oxygenated to ensure that there is enough oxygen when they are paired.

3. Mating: Guppies are fertilized and developed in vivo. When they reproduce, the male fish put their genitals into the female fish's drainage holes, and then discharge sperm to fertilize the eggs in the body. Female guppies do not reproduce immediately after fertilization, and need to wait about 28-32 days before giving birth.

4. Production: Female guppy fish produce not eggs, but small fish larvae. So they will reproduce less than other fish, and they will reproduce more slowly.