Tag: ato, sumi, ato sumi

Ato sumi is a term used in the koi hobby to describe the black markings (sumi) that develop later in a koi’s life, rather than those that are present from an early age. This type of sumi is particularly important in varieties like Showa and Sanke, where the quality and placement of black patterns significantly affect the fish’s overall appearance and value. Here’s a detailed look at ato sumi: Definition: Ato Sumi (後墨): In Japanese, “ato” means “after” or “later,” and “sumi” means “black ink.” Thus, ato sumi refers to black markings that appear later in the koi’s development. Characteristics: Delayed Development: Gradual Appearance: Ato sumi appears gradually as the koi matures. It often starts as faint shadows or spots under the skin and becomes more defined and solid over time. Contrast with Early Sumi: In contrast to sumi that is present from a young age (tategoi sumi), ato sumi can develop well after the koi has reached a certain size or age. Quality and Stability: Rich and Deep: Ato sumi is often valued for its depth and richness. When fully developed, it should have a solid, lacquer-like appearance. Stable: Well-developed ato sumi is typically stable and does not fade easily, adding to the long-term aesthetic appeal of the koi. Importance in Koi Varieties: Showa Sanshoku (Showa): Description: Showa koi have a black base with red (hi) and white (shiroji)…