This is just the beginning of a theory but I figure I'll share and see if others have noticed anything similar.

A friend gave me a koi with a lazy personality. I bred it with every meeroo I had that she was compatible with. No koi babies. Then I bred one of her lazy grandsons with her and got a lazy koi baby. I bred the same pair again and got another lazy koi baby. Two other lazy grandchildren (red & ursine) bred and had another lazy koi. I bred one of the koi babies with a grandson who was not lazy and got a redcoat.

I know someone else who has a similar line-breeding thing going with her kois who are all shy.

Looking over my lineage charts I can see plenty of cases where personality does not pass with coat color directly but I have to wonder if matching personality might somehow be more significant when back-breeding grandkids to a special coat. Perhaps a matching personality is a better chance of a grandkid hiding the coat trait of it's parent?

Anyone else seeing anything like this?