Usturimono

Utsurimono koi, often simply called Utsuri, are a captivating variety known for their bold, two-tone patterns that create a striking contrast, making them a favorite among koi enthusiasts. The name "Utsurimono" comes from the Japanese word "utsuri," meaning "reflection" or "projection," which refers to the reflective interplay of their black base color with a secondary color—either white (Shiro Utsuri), red (Hi Utsuri), or yellow (Ki Utsuri). This variety falls under the Utsuri classification, distinct from the Gosanke, and is celebrated for its dramatic, almost ink-like black (sumi) patterns that wrap around the body, often likened to a checkerboard or a traditional Japanese sumi-e painting. The ideal Utsuri has a deep, jet-black base with vibrant, evenly distributed patches of the secondary color, creating a balanced, harmonious look. The sumi should be glossy and solid, not faded or gray, while the secondary color—whether crisp white, fiery red, or warm yellow—should be clean and bright, with sharp edges where the colors meet. Utsuri are typically judged on the depth of their sumi, the clarity of their secondary color, and the symmetry of their pattern, which often extends to the head and fins for added impact.
The history of Utsurimono traces back to the late 19th century in Japan, during the early development of modern Nishikigoi breeding in Niigata Prefecture. Utsuri originated around the 1870s when breeders began experimenting with black-based koi, likely descendants of the wild Magoi carp, which were naturally dark. The first Utsuri variety, Shiro Utsuri (white on black), emerged as breeders crossed these black carp with white koi, aiming to create a striking contrast. By the early 1900s, during the Taisho era (1912–1926), breeders like Eizaburo Hoshino further refined the variety, introducing Hi Utsuri (red on black) and Ki Utsuri (yellow on black) through selective crosses with red and yellow koi lines. The development of Utsuri was a challenging endeavor, as stabilizing the deep sumi while achieving vibrant secondary colors required generations of careful breeding. Utsuri gained prominence in the 1920s and 1930s as their bold patterns caught the eye of koi hobbyists, and by the mid-20th century, they were a staple in Japanese koi shows, often competing alongside Gosanke varieties like Kohaku and Showa. Despite their popularity, Utsuri remain a challenge to breed due to the difficulty of maintaining consistent sumi depth—young Utsuri often show faded or patchy black that only fully develops with maturity, sometimes taking years to reveal their true potential. Today, Utsurimono are cherished for their unique, artistic appearance, embodying the skill and patience of Japanese koi breeding tradition while adding a dramatic flair to any pond.