Your kohakus Jim should be pretty much the same but bigger. I don't think the showa black will be up as strong as you anticipate. The sanke should also fool you with the expectation that the black that was underneath would be up but it won't be.
what I want you to look for at the end of their nisei growth year is
1. body shape
2. quality of beni ( eveness and consistancy )
3, sumi- quality of what can be seen not amount, and with sanke what black
that was up at tosai that is now down as it comes out.
4.skin quality.
these four elements will tell you if they qualify to go back in the mud next year.
This weekend Jim, I'm off to North Idaho Koi keepers for a workshop on Toshio sakai's sanke and showa. Dan olson has 7 koi that have been in his care for 2 years now ( the new marusome stuff!) and we will review the changes and what we might expect next year ( the final year) of the study.
Because these fish have been kept in a cement pond some of the elements
of finish will be vastly accelerated over the ones coming out of Nisei Koi farm's mud. But for me. I love the excercise of learning, thru cause and effect to see what happens to koi. There is a definite time to have them in mud and a time to have them in cement. the challenge is to know ( if I can borrow slang from a card player's gargon) "when to play em and when to hold em! ".....Good luck with all the folks' koi as they come out of the mud. I hope your dreams are fulfilled!
I know NIKK is planning it's next study group with kohaku and Showa from the magic of the nisei koi farm team work this year.