Size Isn’t Just Genetics—It’s Nutrition, Too

Not all koi will become jumbo, but with the right care, your koi can achieve its full potential. Quality food is essential. The key? Feed efficiency—the percentage of food weight that actually turns into body weight. High-quality, nutrient-rich diets give your koi the best chance to grow strong, healthy, and beautifully proportioned.

Be Smart About What You Feed

Just because koi like a food doesn’t mean it’s good for them. Some lower-quality feeds rely on artificial additives to taste better, much like junk food. But flavor alone won’t grow champions.

When raising high-quality Nishikigoi, choosing the right ingredients is critical. Our recommended foods prioritize natural nutrition that promotes growth, color, and vitality—so your koi not only look amazing, but live long, healthy lives.

The True Joy of Jumbo Koi

What makes koi the king of ornamental fish is their majestic growth. As they reach jumbo sizes—sometimes over 40 inches—their colors, patterns, and body shapes evolve, turning them into living jewels. Whether you’re looking to add an impressive showpiece or experience the joy of watching your koi grow, there’s nothing quite like raising a jumbo koi.

Kigoi – koi #x0813s040-re

Starting bid: $500.00

🎉 Ready to Bring One Home?

If you’re looking to add a truly special koi to your pond, this is your auction. View all available Jumbo Koi below and place your bids. Happy bidding—and best of luck!