Koromo
Koromo koi are a visually striking variety, known for their unique combination of vibrant colors and intricate scale patterns that set them apart in the world of Nishikigoi. The name "Koromo," meaning "robed" or "clothed" in Japanese, refers to the delicate, net-like overlay of darker scales that "robes" their primary color, creating a textured, almost embroidered effect. Koromo typically feature a white (shiroji) base with red (hi) markings, similar to a Kohaku, but what makes them distinct is the overlay of blue or black crescent-shaped edges on the red scales, forming a reticulated pattern reminiscent of fishnet or lace. The most common Koromo type, Ai-Goromo (where "Ai" means indigo), showcases this blue edging, while other subtypes like Budo-Goromo have a grape-like clustering of darker scales, and Sumi-Goromo display more prominent black edging. A high-quality Koromo has a clean white base, vivid red patches with sharp edges, and a uniform net pattern across the red, with the overlay neither too faint nor too heavy, ensuring a balanced, elegant appearance. Their subtle complexity makes them a favorite among koi enthusiasts who appreciate their artistic, layered beauty.
The history of Koromo koi began in the early 20th century in Japan, emerging as a result of innovative crossbreeding during a period of rapid advancement in koi development. Koromo were first created in the 1950s by a breeder named Masayoshi Kawakami, who crossed an Asagi (known for its net-like blue scale pattern) with a Kohaku (prized for its white-and-red coloration). This combination introduced the Asagi’s reticulated scale pattern onto the Kohaku’s red markings, giving birth to the Ai-Goromo. The first successful Koromo appeared around 1951, and over the next few decades, breeders refined the variety, stabilizing the net pattern and experimenting with variations like Budo-Goromo and Sumi-Goromo. By the 1970s, Koromo had gained recognition in Japanese koi shows, valued for their unique aesthetic that bridged the simplicity of Kohaku with the patterned complexity of Asagi. While they don’t often compete with the Gosanke (Kohaku, Sanke, Showa) for top show prizes due to their more niche appeal, Koromo hold a special place in koi history for their role in expanding the diversity of koi patterns. Their development reflects the creativity and patience of Japanese breeders, who continue to refine this variety to achieve ever more striking contrasts and patterns, making Koromo a cherished addition to any pond for their understated yet intricate charm.