The eggs hatch 3 days after fertilization, and the fry start swimming 3 days after hatching. The newly-hatched Koi are called “kego”. Kego are very weak, so they require a lot of care   300,000~600,000 fry are born from one Koi. back

Kego…Used to be categorized by size, but there currently is no clear definition between ”fry” and “kego.” Here newborn Koi fry are called kego.