I have followed some of the threads on differing mutations of silver, grey, axanthic etc... One thing has always bugged me, their heads. Their heads are all the same. Brown or brown yellow. I would love to see a picture of one with a silver head, all silver. Do they exist? Mabe that is why snow has not been made? Mabe the grey mutation is just that, grey, silver or whatever but not true axanthic.
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