As far as wild mutations, genetically speaking, there are so many possibilities of the different kinds of traits you could find in a WC fish. The possibilities are almost endless. However you have to look at the logistics, 1) there's an extremely slim chance a natural mutation will occur as is 2) the fish has to actually survive and get caught 3) the mutation the fish has will most likely make it stand out to predators, making it nearly impossible for the fish to survive past the younger stages of life. And keep in mind the older it gets the larger and more of a problem the mutation may become. So usually when you see a SB or different colored fish (albino, melanistic, xanthic) it will most likely not be WC. Don't get me wrong, there are fish that do defy the odds and make it well past the early stages of life, but it's only on extremely rare occurrences