How Long Do Koi Eggs Take to Hatch

Depending on water temperature, the eggs usually hatch in 3 – 5 days. the juveniles are about 7 mm long and will feed from their yolk sac for few days.

How many koi eggs survive?

A female Koi can lay up to 100,000 eggs, although achieving this number is unusual. You can expect approximately 50,000 eggs from a healthy one-pound female, but only around half of these will survive hatching and fewer still will survive the fry stage of life.

How do you protect koi eggs?

Koi will also lay their eggs on twigs nestled on the floor of the pond. Keep a careful watch on the eggs once they are laid, as many koi enjoy snacking on them. You may have to place any roaming hungry koi in a separate pond or tank to protect your eggs while hatching.