larz1
Koi Kichi
Jun 19, 2006, 8:48 PM
Post #3 of 4
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Re: [2yearsinkoi] IS THERE TYPES OF COLOR CHANGE IN FRY
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Utsuri is correct about the breeders culling process, but for ponders like us who usually experience flock spawing from koi we have little history on it is more difficult.
When culling from known parents from known grandparents (as is the case with professionals) you are culling for type and discarding those that do not fit.
When culling from an unknown parent lineage you are culling somewhat it the dark as to expectations. Darker fry will tend to be utsuri types as they mature, Orange/reddish types will tend to be Kohaku or yamabuki, but plain white ones can really fool you sometimes. Two examples from our spawnings last year are good cases in point.
We culled very little to see how they would develop and learn from them. One shiro muji with no sign of color at all at 3" began to slowly develop a maruten kohaku pattern over time and is still progressing in that direction. Another was plain, dull, white and then grew a pencil thin black stripe down the middle of the dorsal line at around 4". That thin black line has slowly grown lighter and wider and appears to be developing into the beginnings of a pale blue/grey Asagi net pattern. Needless to say, neither of those was predictable and we are still learning from them.
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