First of all, we should know that the production of guppy is sometimes carried out in stages (it will be produced in the morning and then in the afternoon), so we must see that the fish body is in a strip shape (at this time, nearly 10 small fish will be born one after another), so the best method is: 1. Put a lot of aquatic plants, 2. Add an incubator (only female fish, not male fish) and you can leave it alone.