Hariwake are two coloured metallic Koi, consisting of a white skin base colour, overlaid with patches of yellow/orange. The easiest way to spot metallic skin in Koi, is when the pectoral fins are not transparent at the tips. Hariwake are available in both scaled and scaleless (doitsu) varieties. A good Hariwake Koi will have platinum white skin with strong, defined patches of colour.
This Hariwake is yellow on platinum body