Newborn guppies don't need to be fed immediately, they will be fed the next day. You can start feeding the cooked egg yolk the next day and crush it in water, not too much, so as not to deteriorate the water quality.
The guppy can feed the bought fish food in five days, but it needs to be crushed. Feeding the live will grow faster, and you can eat the same things as the adult fish in a month.
Extended data:
Peacock is an oviparous fish. Strong reproductive ability and early sexual maturity. After feeding for 3-4 months, the young fish can enter maturity and reproduce. The time of sexual maturity is closely related to water temperature and feeding conditions.
Under suitable environment, guppy can breed once a month, and the yield of a fetus is about 10 to 50 small fish. After three to five months of breeding, small fish have the ability to reproduce and can reproduce the next generation.
When guppy breeds, it is necessary to choose a larger aquarium and keep the water temperature at 26 degrees Celsius. The pH value is pH6.8-7.4. At the same time, we should plant all kinds of aquatic plants. If there are no aquatic plants, we can put some stones and landscaping items that can be used to raise fish to avoid them.