Little shiny scales on the head of a Koi.
Category: skin-and-quality
Metallic shine (finish) on the head of a young non metallic Koi.
Koi of poor quality.
Koi of medium quality.
Black between the scales.
Black edge line of a red marking in the middle of the scale.
Back edge line of a Hi marking, or kiwa, straight in the middle of the scales.
Irodiscent edge of a scale of a Koi.
A good black Koi with thickness and luster.
Koi of excellent quality.
