Hiroi Koi Farm is a respected name in the Nishikigoi world, located in Niigata, Japan — the cradle of koi breeding. Operated by twin brothers Kazuyoshi and Nobuaki Hiroi, the farm is known for its consistent production of koi with excellent body conformation, deep and vibrant coloration, and balanced, well-defined patterns. This isn’t a large-scale, high-volume operation. Hiroi Koi Farm remains focused and deliberate, allowing each koi variety to develop to its full potential.
Their breeding program prioritizes long-term growth, structure, and aesthetic appeal — ideal for collectors who value koi that not only look good today but continue to improve as they mature. Every Hiroi koi carries the thoughtful breeding touch and attention to detail that only comes from decades of hands-on experience.
RENOWNED FOR SHOWA AND GINRIN SHOWA
Hiroi Koi Farm is quite popular among fellow Koi enthusiasts. Their Showa and Ginrin Showa varieties speak volumes about their prowess in crafting koi, truly owning Doitsu Showa and Ginrin Showa in most koi farms. Hiroi focuses on high-grade, prominent Showa to further increase its global presence, and it has surely become a go-to location for koi lovers.
Hiroi Showa has gained a serious following thanks to its bold patterns and solid structure. Whether it's a clean-faced Doitsu or a dazzling Ginrin, their koi show strong promise from a young age and tend to grow into elegant, powerful adults. These traits make them top picks for those looking to enhance a pond's visual appeal or even enter the show circuit.
BUILT FOR GLOBAL COLLECTORS
Over the years, Hiroi Koi Farm has attracted collectors from around the globe, drawn by the farm’s commitment to producing koi with enduring quality and presence. Their koi don’t just perform well in Japan; they turn heads internationally. From Asia to Europe to North America, Hiroi-bred koi are prized for their unique aesthetic and dependable development.
The farm’s continued dedication to refining its Showa lineage has led to increased recognition and growing demand outside Japan. As a result, Hiroi Koi Farm has become a go-to name for serious koi enthusiasts looking for something beyond the average.
SELECTED WITH CARE FOR FITZ’S FISH PONDS
At Fitz’s Fish Ponds, we’re proud to offer hand-picked koi directly from Hiroi Koi Farm. Each fish is carefully selected for its unique beauty, pattern strength, and potential for future growth. Whether you're looking for a mirror-scaled Doitsu with strong sumi placement or a brilliant Ginrin Showa that sparkles under the sun, Hiroi koi provide standout elegance and top-tier genetics.
WHY HIROI KOI STANDS OUT
What makes Hiroi koi different isn’t just their appearance; it’s the farm’s focus on balance and refinement. Their koi don’t rely on gimmicky patterns or overbred color saturation. Instead, they feature crisp, intentional markings paired with classic Showa depth. That combination gives the koi a timeless quality that matures beautifully year after year.
These fish are bred for growth, not just color. The frame, skin quality, and scale integrity are all part of what makes a Hiroi koi special. When you add one to your collection, you’re investing in a fish that will evolve, improve, and anchor your pond with show-level appeal.
A FAVORITE AMONG ENTHUSIASTS
Word travels fast in the koi community — and Hiroi’s work speaks for itself. Enthusiasts and long-time collectors alike often seek out Hiroi Showa specifically, knowing the fish will deliver on all fronts: structure, color, and personality. The farm’s koi have gained a strong following not just for how they look in the dealer tank, but also for how they develop in private ponds across the world.
That loyalty comes from consistent results. Hiroi doesn’t flood the market with high-volume sales. Instead, they focus on crafting koi that koi lovers truly appreciate, koi that grow better with time and stand out for the right reasons.
READY TO ADD A HIROI KOI TO YOUR COLLECTION?
Explore our current Hiroi offerings online or contact our team directly for more details. We’re happy to share more about our latest selections and what makes each fish unique. These koi go quickly, and when Hiroi koi arrive, they don’t stay in stock long.
If you're looking for show-quality Showa with real staying power, Hiroi Koi Farm delivers fish that truly live up to the reputation. Bred with care, selected with purpose, and offered to collectors who expect the best.
BRING HOME BOLD CONTRAST AND LONG-TERM BEAUTY WITH HIROI KOI
Our hand-selected Hiroi koi deliver bold patterns, crisp contrast, and long-term beauty you’ll enjoy season after season. Shop our collection of koi fish online today, and bring home a koi that turns heads now and gets even better over time. Need help shopping? Talk to an Expert Online or call us at (908) 514-4778.
HIROI KOI FARM FAQs: CHAMPION KOI, BLOODLINES, AND BUYING TIPS
What Is Hiroi Koi Farm Best Known For?
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Hiroi Koi Farm specializes in bold, striking varieties like Doitsu Showa and Ginrin Showa and has developed a strong reputation for these kinds of koi. As bold contrasts and ongoing progress occur, new koi are bred for enduring colors, strong contrasts, and the long-term development of patterns.
Where Does Hiroi Koi Farm Get Its Stock From?
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Hiroi originates in the Niigata region of Japan, home to nishikigoi, the birthplace of Koi, and the most famous breeders worldwide.
What Is a Doitsu Showa and Why Is It Special?
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A Doitsu Showa is a type of koi that does not have scales like the traditional Showa variety. Due to the lack of scales, the colors and sumi patterns look distinctly sharp and crisp, giving the koi a fantastic appearance.
How Do Hiroi Koi Develop Over Time?
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Hiroi koi are bred to retain their evolving traits as they age. Sumi is one of the black markings that give them their unique appearance, and its application can appear and strengthen gradually, potentially improving their unrivaled, alluring growth.
Why Would I Purchase a Hiroi Koi From Fitz’s Fish Ponds?
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At Fitz’s Fish Ponds, we collaborate closely with Hiroi Koi Farm, ensuring that the koi we select meet the rigorous standards.
