My Bad....Well, people have to understand beni at different stages of development when they purchase koi...From what I have seen and experienced Hikkui general starts off at Nisai and it isnt just GoSanke. I have a Goshiki that has Hikkui on the forehead, but with scrapping and PP rub it seems to lessen the look. I think if a hobbyist starts off with good water and genetics this will lessen the chance of Hikkui...Even with that being said Hikkui will still have no known cure.