12-04-2008, 02:06 PM
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The fry will vary in appearance. In biology, you should have studied genetics. You should have learned about dominant genes. Here's what will happen....
A or a=platy
B or b=swordtail
(lower case for recessive genes and caps for dominant)
You will end up with a group of fish that will have the following Ab and Ba.
Continued interbreeding will render -- Aa, Bb, Ab, and Ba and so on....Yes pure strains will appear in successive generations but one will not be able to tell which fish are pure and which are carrying the alternate dominant or recessive gene.
Cross breeding is NOT a good practice in our hobby. Much is done in the name of money. Anything to make a buck.
As many of you may, or may not, know, the Victorian Cichlid is disappearing in its natural habitat due to man's interference with nature(again, in the name of making a buck). They may soon be found only in the hobby. No joke. If we were to begin to cross breed these fish, the pure strain of each individual species would be lost forever. It is that truth the binds me to be against any form of cross breeding in the hobby. "Designer fish" have no place in my tanks. And that is exactly what they are, "designer fish". Man playing God to make a dollar.
Designer fish may be neat but are not practical, nor are they natural. So, please don't play God. Cross bred fish are nothing more than the result of a mad, greedy, pseudo-scientist mentality.