Do goldfish and koi reproduce?
Both goldfish and koi lay eggs to reproduce. Spawning typically takes place in spring when hundreds of eggs are laid. Many of the eggs are never fertilized, then many more are eaten by the adult fish. Those that hatch are still at risk for several weeks of being eaten by the adults. Still, many can survive in the pond to adulthood. Fish spawns are one way it is very easy to end up with an overpopulated pond.
