Kikusui (kee coo' swee) are a scale-less version of a Hariwake.  Look for one with a nice Kohaku pattern that has nice sharp edges and very white skin.  A Kikusui's pattern is judged the same way as a Kohaku's is.

Doitsu Platinum Koi with a Hi pattern, means "a Chrysanthemum in water", is the same as a Doitsu Hariwake with red markings or a metallic Doitsu Kohaku