Koi can and often do breed in a pond, especially during the warmer months when water temperatures rise above 65°F. Spawning typically occurs in late spring or early summer, with males chasing females and nudging them to release eggs. This process can be vigorous, and it’s common to see splashing and chasing around shallow areas or among aquatic plants. Once eggs are laid, males fertilize them, and the eggs stick to surfaces like pond walls, plants, or spawning mops.
While koi are capable of breeding naturally in a pond, most eggs and fry (baby koi) do not survive unless given special care. Adult koi may eat the eggs or fry if they are not separated. If you want to encourage successful breeding, you can set up dedicated spawning areas or move the eggs to a separate tank for protection. Raising baby koi requires close attention to water quality, food, and space, so it’s helpful to be prepared if breeding is a goal.
