There are certain rules in measuring the “beauty of Nishikigoi”, in other words, points of appreciation, and they are generally said to be “body conformation” “quality” and “pattern”.

The following three Nishikigoi are brand Koi that won overall championships in the All Japan Nishikigoi Show. Each Koi had different winning factors. The first Koi won for its excellent shape, the second for its outstanding quality, and the last for its beautiful patterns.

Body Conformation

The body conformation of fish such as sweetfish and trout which live in mountain streams are long and thin because it is affected by strong currents. However, since Nishikigoi live in water without flow, their body becomes spindle-like. A well-formed spindle shape not only decreases the water pressure on Nishikigoi but is said to be the most beautiful body conformation.

The picture is of a brand Nishikigoi called “Daiya-no-Kamen (Diamond Mask)”. It has an ideal spindle-shape with a perfect balance among the head, body and tail. It has a dominating presence and is very elegant.


Quality means the basis of the Nishikigoi and refers to the overall potential capacity Nishikigoi possess. For example, in Kohaku, a “snow-white” Shiroji is more important, and the Hi and colors of the patterns should be bright and deep. The quality of Nishikigoi is determined by the crossing of the parent Nishikigoi, which is created by the breeders. The quality is reflected in the Nishikigoi’s beauty as they grow, and bringing it out is the Koi lover’s role.

The Nishikigoi in the picture is a brand Nishikigoi called Loran. This Nishikigoi possesses not only excellent Hi but also supreme Shiroji. Its beauty is accentuated as the Hi stands out in the beautiful Shiroji.


The post popular point in enjoying the Nishikigoi is their patterns. However, in each variety there are different ways to appreciate the pattern, so it is essential to recognize the differences. Dynamic, endearing patterns or well-balanced patterns express each Koi’s uniqueness.

The Nishikigoi in the picture is a Yondan Kohaku that was created through selective breeding. The beauty of its pattern excels that of the two others’ on this page, which was the winning factor. The patterns of Nishikigoi which attain first prizes at well-known Koi shows tend to become popular.


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Nishikigoi Dictionary
Koi Disease
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