Does anyone know what variety this is. It was a very interesting fish, and nice looking, but developed the dark meroon/brown spot, bad bodyshape, lost much of it's luster and appears eggbound. Almost Matsuba, but Kase don't breed Matsuba, and it comes from Kase, and the scales dont have black outlines. It is rather metallic black/blue scales with metallic white outline.

I guess: "Kujaku without hi" ????