Minimum tank Filtered pond of about 1,200 US gallons (4,500 L) or more, preferably over 3 ft (90 cm) deep
Adult size Often 24 in (60 cm) or more
Temperature Seasonal cool-water pond conditions, with gradual changes
Water chemistry Stable, near-neutral to moderately alkaline water
Ammonia and nitrite 0 ppm
Housing & compatibility
Provide strong biological filtration, aeration and plenty of turning room. Keep with similarly sized pond fish and size the pond and filter for the adult group.
Diet
Use a complete koi food. Match the amount and frequency to pond temperature and the food maker’s instructions.
Species notes
Longfin koi (domesticated Cyprinus carpio). Butterfly koi are the long-finned form of ornamental koi.
