I have read and made my own observations that solid colored koi tend to grow
faster.
Than you have the ones who are more agressive at meal time...
Many factors involved.
I am sure the list can go on and on.



"P Davidson" wrote in message
. com...
I purched most of my Koi several years ago and at the time, they were all
the same size (about 3 inches). They now vary in size from about 9 inches
up to about 15 inches. The larger ones are also much fatter.
Is this typical? Does this reflect differences in breeding or varieties?
Does color make a difference? Seems like my white/orange Koi are larger
than the orange/black combinations.
Paul D