Kujaku Koi

Kujaku Koi (Cyprinus rubrofuscus) is a pond fish species adapted to pond ecosystems. Adapted to seasonal temperature swings, leaf litter, and outdoor water chemistry.

Kujaku Koi requires a minimum of 1000 gallons (pond) for healthy adults. The minimum is based on 24-36 inches adult size and territorial range. Plan an outdoor pond with appropriate depth (3+ feet for cold-climate winterization), filtration sized 1.5-2x pond volume per hour, UV clarifier, and surface skimmer.

Kujaku Koi prefers pond parameters: temperature 50-78°F seasonal swing for cold-tolerant species, pH 7.0-8.5, ammonia + nitrite 0 ppm, nitrate under 40 ppm, dissolved oxygen 5+ mg/L (aerator non-optional in summer).

Kujaku Koi is a omnivore. Provide a varied diet of pellets, frozen foods, and supplemental greens. Feed twice daily in small portions. Browse our food guides for product recommendations.

Kujaku Koi is compatible with similar-temperament pond fish at appropriate stocking. Plan stocking around adult sizes and territorial behaviors.

Kujaku Koi reaches 24-36 inches at adulthood with a captive lifespan of 25-50 years with proper care.

Kujaku Koi spawning happens in spring as water warms; provide appropriate spawning substrate and consider separating eggs to prevent predation.

Kujaku Koi can develop pond-specific issues: parasites, bacterial infections, and seasonal stress around water temperature transitions.

Kujaku Koi is sold at LFS, online retailers, and direct from breeders. Browse live Kujaku Koi from vetted Fast Aquatics vendors with carrier-tracked overnight shipping, climate-aware hold logic, and a 4-hour DOA window with photo-evidence claims.