This is very interesting. A friend of mine up in New Jersey is breeding his HRP to become the bluest he can produce, which is where I got the line breeding project idea from. When his HRP produce fry, half of them come out blue, and the other half come out grey like the fish in Ken’s picture. My buddy also purchased his from Ken Davis a few years back, So that would explain it. I’m guessing this could be a grey version of HRP? I’ve witnessed it for myself where half of his brood are beautiful bright blue, and the other half look like convicts with red tails, and they have the same parents. Very interesting indeed.