How do they get the various colors of Mollies? The LFS says they cross the silver with the black for the Dalmatians, is there any truth in that? It seems like mine are color conscious - I don't see the black and white mixing. On the other hand I now have one fry that looks like a possible cross. I also have some gold or orange although they are not in a tank with any black or silver, but if they were, would they mix and what would be the result? Also what is the difference between Dalmatian and Marble?? Ah yes, and the LFS tells me all sailfin are males??