Ok I have a Sunburst Mickey Mouse fish that had a baby a month after we bought her. I was able to put him up and 2 months later a found another new baby. Now both are older and I've noticed that the older is orange but has no Mickey face on it. The younger does appear to have one. Is this a difference in gender? Also, if the babies turn out to be boys will they mate with the mother? Do I need to separate them.