Enigma of Shiro Utsuri Part 4

The main thing I would like to stress about this shiro is that it is a female fish with constantly changing head pattern and very slow growth rate. At the point of writing, this fish is about 45cm and it has just won 3rd Prize in the 7th Malaysia Koi Show and Championship. Some other shiro utsuri from the same batch has grown between 50cm to 60cm. So this fish has just proved that not all female fishes can grow big/rapidly. In fact, some of the males grew much bigger than this female shiro. Although they came from the same bloodlines, they don't share the same body structure and quality as well as eating habit. Those fishes with good eating habit and body structure tend to grow faster and bigger and not very much affected by the sex of the fish.
Generally, females tend to grow bigger but provided that it has good body structure and eating habit as well as good bloodlines.
In photo A, the sumi on the head is heavy and looks as if it is fading. True enough, it faded a little and the pattern on the head changed as shown in photo B. The head became more white and it continues to change. I will try to post a newer photo later to show further changes of sumi pattern on the head.