I have 2 progression pics. 1st koi is a KURO GOSHIKI. 1st pic was at 7" last year. The new one is at 12" (1yr later).
You can see that the sumi is starting to get black which is what i was hoping for however the gin rin is not as nice as i expected it woul be.
The 2nd koi is a showa from 2yrs ago at 10". New pics are at 17". Original pic shows the hi anice deep red but now its much lighter and has a orange red color. The sumi hasnt changed to much.