Some Goromos have a black shading instead of a blue shading over their Hi pattern. These are somewhat rare and if you see one with a nice pattern, you should get it. The skin should be a nice white color and the pattern should have crisp edges.
What makes an Sumi Goromo?
Goromos were created by accident. How? A breeder was breeding Goshikis and a goshiki with a white
background and a net pattern on the Hi appeared. This Koi was carefully bred and now we have the Goromo variety.
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