Here is a Showa I purchased as Tosai in Feb. 2001 at the Phoenix show. The second picture was taken a few days ago. The first picture maybe a year ago. What I would normally expect for a koi with sumi, is for the sumi to come on in the Winter and diminish in the Summer. I don't like the way this fish is developing at 22 inches. The hi is breaking up and she has at least temporarly lost her head sumi.
Mike Pfeffer