koi fry

Quick Answer Koi fry growth and survival depend heavily on four environmental factors: water temperature (65-75°F), pH (7.0-8.0), dissolved oxygen (above 6 mg/L), and a 12-hour light/dark cycle. The difference proper management makes is dramatic and measurable: fry left in a community pond typically see only 15-30% survival, while fry raised in a separate, well-managed