I think if you look at the male closely, you will see that it is not finished and there is actually quite a bit of black there. Also the fins carry black on the male which is a sign of healthy availability. parents are not chosen because of pattern but because of quality, so what you see is not necessarily what you'll get. How many National Champions have been bred with perfect patterns only to have the children fall short of the mark. Most breeders
take a five year learning curve to really understand if a parent "clicks".
I think the photo itself is deceiving as the female parent is featured with a larger position yet if you look at the male it is only small in it's relative size
of the photo, not the actual koi size relative to his mate. Most consumers realize they want females, so why wouldn't you play that up as "exceptionally" large