Mating will change a lot of fishes colors also. Some fish will use coloration in the mating process or also as warning to others. Not sure how much pond fish do this, but I think they do it some. The males seem to be more colorful while on the nest.

That is why I figured as his fish get older and more mature they will gain some color. My biggest, oldest fish seem to be more colorful.

Last edited by snrub; 03/04/17 01:09 PM.
John

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