After a burst of spring chasing, you may find koi eggs attached to plants or other surfaces in the pond. Koi scatter eggs rather than building a nest, and adult koi do not guard their young. Finding eggs does not mean you will soon see baby koi: water conditions, shelter, and other pond residents affect what survives.
Where do the eggs go?
Spawning can disturb plants and leave eggs among foliage, gravel, and other pond surfaces. Avoid pulling apart the pond to search for every egg. If you are not sure whether the chasing was spawning, start with Are My Koi Fighting or Spawning?. Fish that appear injured or distressed afterward deserve prompt attention and qualified fish-health advice.
Will the eggs hatch?
Some eggs may hatch, but adult fish and other pond residents can eat eggs and newly hatched fry. Water conditions also matter. Do not count on a fixed hatch day or survival percentage. The youngest fish are hard to see, so an empty-looking pond is not proof that nothing hatched.
What do the smallest fry need?
Newly hatched koi are not miniature adults ready for standard pellets. Tiny natural foods in an established pond may support some fry, but the amount of food and shelter varies from pond to pond. If you intend to raise fry deliberately, ask a qualified koi breeder or aquatic veterinarian for stage-specific feeding and housing guidance before adding food or moving fish. Uneaten food can worsen water conditions.
What should you check after spawning?
Spawning can leave water cloudy or foamy. Observe the fish, check water conditions if anything seems wrong, and maintain normal circulation. Remove obvious excess debris without making a large, abrupt change to the pond. Plants or suitable cover may give some fry shelter, but none guarantees survival. If young fish do grow, plan for the additional fish load as they mature rather than judging by their tiny size today.