
Yoshikazu Otsuka
My Story
Otsuka Koi Farm is a well-established koi breeder located in the Koguriyama region of Ojiya, Niigata Prefecture, Japan. The farm covers a large area with many traditional mud ponds and has earned a strong reputation for producing a wide variety of high-quality koi. The current head of the farm is Yoshikazu Otsuka, representing the third generation of the family working full-time in koi production. Each year, the farm produces a substantial number of koi and is known for maintaining consistent quality across multiple varieties.
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Specialization
Otsuka Koi Farm produces a broad range of koi. Their Asagi are especially respected for their crisp reticulation, balanced blue tones, and vibrant highlights. The farm’s Goshiki and related variants are considered some of the best in Japan. Otsuka has also developed variations such as Goshiki Showa and Goshiki Sanke that have gained attention among hobbyists. In addition, the farm raises Utsurimono, including Kage Shiro Utsuri and Ki Utsuri, which are prized for their bold contrast and unique patterns. They also produce other varieties, including Aka Matsuba and assorted kawarimono, demonstrating the farm’s commitment to offering a wide palette of koi for collectors and enthusiasts.
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About the Breeder
Yoshikazu Otsuka leads the farm today and continues a family legacy that began decades ago. The farm’s roots date back to 1962, with full-time operations beginning around 1984. Yoshikazu Otsuka is known for his philosophy of valuing diversity and quality. He maintains multiple bloodlines and produces koi across a broad spectrum, carefully selecting parent stock and focusing on raising healthy, resilient fish.
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Reputation and Strengths
Otsuka Koi Farm is widely respected for combining variety with quality and consistency. Hobbyists and dealers appreciate that Otsuka koi, whether Asagi, Goshiki, Utsuri, or other types, grow strong, maintain excellent skin quality, and develop vibrant coloration. Their Asagi and Goshiki are especially sought after for their balanced coloring, crisp reticulation, and reliable growth. By producing a wide range of koi, Otsuka caters to collectors who value both traditional varieties and more unusual patterns.
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Summary
Otsuka Koi Farm is a respected breeder in Niigata known for its Asagi, Goshiki, Utsuri, and other kawarimono varieties. Under the guidance of Yoshikazu Otsuka, the farm maintains a commitment to diversity, strong bloodlines, and consistent quality. Otsuka koi are sought after for their health, color, and well-balanced patterns, making the farm a trusted name among hobbyists and dealers worldwide.





