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Ojiya, Niigata Prefecture, Japan

Maruhiro Koi Farm

The house

Maruhiro Koi Farm is based in Ojiya, Niigata Prefecture, Japan, and is owned by Hironori Maruhiro, son of Seitaro Hirasawa, founder of the related Marusei Koi Farm (established 1960 in Kawaguchi, Nagaoka). Drawing on that family breeding background, Maruhiro specializes in Gosanke (Kohaku, Sanke, Showa), Hikarimono (metallic), and Kawarimono varieties, with a particular emphasis on producing large-bodied koi. The farm is known in the US import trade for maintaining an unusually large standing inventory across price points, from affordable hobbyist fish to competition-caliber specimens, and is frequently cited as a first stop for Niigata-touring dealers and buyers.

Maruhiro Koi Farm koi in stock at US dealers

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US dealers importing from Maruhiro Koi Farm

Waterwheel Japanese Koi Farm

Unclaimed

Mount Croghan, SC Ships nationwide $ $$ $$$

Waterwheel Japanese Koi Farm is a family-run koi farm in the Sandhills region of South Carolina (Mount Croghan) that sells three distinct tiers of koi: Japanese imports sourced from named Niigata breeders including Hiroi, Maruhiro, Marudo, Suda, and Otsuka; homebred F1 koi bred in-house from its own Japanese broodstock; and more affordable domestic pond-quality fish. The farm quarantines every import, ships nationwide to the lower 48 with a live arrival guarantee, and offers free local pickup and by-appointment farm visits.

  • Kohaku Koi
  • Sanke Koi
  • Showa Koi
Sources for this profile (3)