01-10-2007, 08:49 PM
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Color mixing of fish via breeding isn't quite that simple. When breeding for color, it is difficult, and cannot be "controlled" completely. This involves understanding the genes and dna structure of the fish. Just as brown hair in people can't be achieved by mixing 1 person with blonde hair and one with black hair. You must first determine "dominant" traits, then you must know what the various generations of that particular fish carry for dominant traits and other genes. As with people, if grandpa has blonde hair and grandma has black hair... mom may come out with either black or blonde, and the grandkids 2 generations may produce blonde children, even if those particular parents both have black hair. It's complicated, but there are many books on the market to help you break it down.
The other thing to consider with breeding for specific traits or color strains, especially in livebearers, is that their body is able to retain the sperm to allow for multiple spawns, even if only the female is present. To know that your female fish is not still producing spawns from prior breeding, that fish would have to be isolated from all males for up to 1 yr before you could expect to get a somewhat true strain, and then it would be paired with a single male. If that female was needed to produce spawns with a 2nd male, it would take another 6 months - 1 yr to be sure she has finished producing spawns from the first male.