How long until guppy fry hatch from eggs?

Guppy fry usually hatch in about three and a half days, but the temperature must stay around 27 degrees C during incubation. After hatching, move the fry to a separate tank so the mother does not eat them, and keep the water at 26 degrees C. Do not feed on the first day; start with boiled egg yolk on the second. Because the fry have weak resistance, clean leftover food and feces after each feeding to keep water clean..