Seijuro Suzusei

Seijuro Koi Farm

Located in the celebrated koi-breeding region of Niigata Prefecture, Japan, Seijuro Koi Farm (also known as Suzusei Koi Farm) is internationally respected for its work with Showa Sanshoku. The farm was originally established by the Suzuki family, and today it is led by Mr. Seiichi Suzuki, widely recognised in the koi world by his breeder name, Seijuro. Over the years, the farm has become one of Niigata’s most admired producers of Showa, developing a bloodline that is trusted by hobbyists, collectors, and dealers worldwide.

Seijuro Koi Farm has earned its reputation by specialising in Showa, a variety that demands a delicate balance of three colours: red (beni), black (sumi), and white (shiroji). Through careful breeding and selection, Seijuro has refined its Showa bloodline to consistently display:

• Thick, jet-black sumi with a glossy, lacquer-like finish and excellent balance across the body.
• Deep, rich beni that holds its vibrancy as koi mature into Nisai, Sansai, and beyond.
• Bright, pure shiroji that provides contrast and enhances the impact of the overall pattern.
• Large, powerful body shapes with excellent bone structure, giving koi the potential to reach jumbo sizes.
• Stable development, with koi often becoming more impressive with age — a hallmark of Seijuro Showa.

This dedication has made Seijuro koi not only admired for their immediate beauty but also trusted for their long-term potential, an essential quality for serious koi keepers.

The farm operates across Niigata’s traditional mud ponds, where koi are raised during the spring and summer months in an environment that encourages natural growth, strong health, and vivid skin quality. The mineral-rich water and natural food sources in these ponds contribute to the strong sumi and deep colours for which Seijuro Showa are known.

During the winter, koi are carefully housed in modern indoor facilities, where they are closely monitored and refined. This seasonal cycle — natural outdoor growth paired with precise indoor care — is a cornerstone of Seijuro’s breeding philosophy, ensuring koi of both durability and refined beauty.

Over the years, Seijuro Showa have gained an outstanding reputation on the global stage. The farm exports koi worldwide, with its Showa frequently featured in dealer selections and admired at koi shows. Collectors often highlight the powerful sumi and well-balanced colouration of Seijuro koi, making them a favourite choice for both private ponds and competitive show circuits.

Many hobbyists consider Seijuro one of the most reliable breeders when seeking a Showa that will not only look impressive now but also continue to develop positively as it matures — a quality that has cemented the farm’s reputation.

The Suzuki family has been devoted to koi breeding for generations, passing down knowledge and techniques that blend tradition with innovation. Under Seiichi Suzuki (Seijuro), the farm has continued to strengthen its Showa bloodline while maintaining the values of craftsmanship and passion that have defined Niigata’s koi-breeding culture.

Each koi raised at Seijuro Koi Farm reflects this legacy: a balance of heritage, selective breeding, and a deep respect for Nishikigoi as living art.