Asagi

Asagi koi are a classic and understated variety, admired for their elegant, natural beauty and historical significance in the world of Nishikigoi. Known for their serene appearance, Asagi feature a blue-gray, net-like pattern of scales across their back, resembling a delicate lattice, with vibrant red (hi) or orange markings on their belly, sides, fins, and sometimes cheeks. The name "Asagi" derives from the Japanese word for a pale blue-gray color, reflecting their characteristic dorsal hue. The scales on their back are outlined in a darker blue, creating a diamond-shaped reticulation pattern that gives the impression of a shimmering net, while the red accents provide a warm contrast, often intensifying with age. A high-quality Asagi boasts a uniform, clear blue-gray net pattern without smudges or breaks, paired with bright, well-defined red markings that don’t creep too far up the body—ideally stopping below the lateral line for balance. Their understated elegance and resemblance to the wild Magoi carp make Asagi a favorite among traditionalists, often appreciated for their calming presence in a pond.

The history of Asagi koi dates back to the early days of koi breeding in Japan, making them one of the oldest known varieties. Originating in the early 1800s in Niigata Prefecture, Asagi are believed to be among the first color mutations bred from the black Magoi carp, a hardy fish raised for food in rice paddies. Around 1815, farmers noticed natural mutations in Magoi that produced a blue-gray hue with red markings, and they began selectively breeding these fish to enhance the traits. By the mid-19th century, during the Edo period (1603–1868), Asagi had become a distinct variety, valued for their resemblance to the wild carp while showcasing refined colors. Early records suggest that Asagi were often used as a foundation for other varieties, including the development of the Gosanke (Kohaku, Sanke, Showa), due to their stable genetics and hardiness. In the 1920s, breeders began refining the Asagi further, aiming for a more consistent net pattern and brighter red markings, a process that continued into the 20th century. While Asagi don’t often win top prizes at modern koi shows due to their subtle appearance compared to flashier varieties like Kohaku, they hold a special place in koi history as a progenitor of many modern koi types. Their enduring appeal lies in their simplicity and connection to the origins of Nishikigoi, offering a glimpse into the early artistry of Japanese koi breeding.