Koi Varieties
Kohaku

There are all sorts of “Kiwa (the edge of the pattern)” -scale-wide Kiwa, razor-sharp Kiwa, and Kiwa resembling the edge of a torn blanket, etc.
Shades of white ground (skin) are quite diversified too — skin with a soft shade of fresh-unshelled, hardboiled egg, skin with a hard shade of porcelain, yellowish skin, and so forth.