How many babies do koi fish have?

Koi fish can produce a large number of eggs during spawning, typically ranging from 20,000 to 100,000 eggs at a time, depending on the size and health of the female. However, not all of these eggs will hatch; many will be eaten by predators or will not survive due to environmental factors. The survival rate of koi fry can vary significantly, and proper care is needed to raise them successfully.