*Ends November 30th 2025. T&Cs apply.
Hiroi (Conias) Koi Farm
Located in the scenic Koguriyama area of Ojiya, Niigata Prefecture, Hiroi (Conias) Koi Farm is one of Japan’s most established and respected koi breeders. Under the leadership of Kazuyoshi Hiroi, the farm spans nearly 100,000 m², with more than 60 mud ponds and a carefully maintained broodstock of 80 parent koi. With an annual production of over 40’000 fry, Hiroi Farm is recognised as one of the most prolific and influential Niigata koi farms.
Renowned worldwide, Hiroi Conias Koi Farm offers an exceptional range of koi varieties. Their breeding programme includes the prestigious Gosanke (Kohaku, Sanke, Showa), as well as striking Doitsu koi and metallic and patterned varieties such as Goshiki, Ginrin Goshiki, Ochiba Shigure, and Kujaku. Among these, their award-winning Goshiki koi are especially prized for their vibrant colours, clean patterns, and outstanding quality—making them highly sought after by collectors and enthusiasts searching for Goshiki koi for sale from Japan.
With its combination of scale, tradition, and consistent excellence, Hiroi (Conias) Koi Farm continues to set the standard for Japanese koi breeding. Whether you are looking for Gosanke, Doitsu, or Goshiki koi, Hiroi’s reputation ensures fish of uncompromising quality, bred in the heart of Niigata—the birthplace of Nishikigoi.
