What To Look For
Ideally, the white of the body should be clean and unblemished under the reticulated net pattern. The red should be solid and dark, with a constant hue and tone across the body. The red of Goshiki will vary widely from koi to koi, but it should always be consistent in color and tone across the body of any one fish.
The red patterns should be artistically balanced and spaced along the body of the koi, and should not be confined to one end or one side of the body. If the hi extends down onto the head, it should stop around the eyes, and should never extend all the way down the head to cover the nose.
The black and blue edging of the white scales should create a repeating net pattern, but should not intrude onto any of the red scales. While this describes the ideal Goshiki, this arrangement of colors can be very difficult to find.