How to choose koi? Master the markings of Kohaku koi in three minutes
Five-color koi are produced by crossing Kigoi (yellow koi) with Sanke koi, and are named five-color because they carry white, red, black, and indigo; when it comes to Shiro Goshiki, the type with a beautiful red pattern is especially preferred. In recent Shiro Goshiki, rather than having the red pattern marred by black speckled markings, most feature blue emerging on a white base. The...
Near the tail there must also be a red patch, called a "tail stop." The ideal tail stop is about 2cm from the tail, and it must never run into the tail. However, for large koi, a tail stop positioned further forward or no tail stop at all may be acceptable.
In short, the red pattern must never be heavy at the head and light at the tail, or uneven and uncoordinated; balance between head and tail and harmony between left and right are best.
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