Originally Posted by bettalover2033
Well when I said geno trait, I mean like a gene that would always be present in your own line. Like for example, my friend used to breed platties or mollies and she eventually added a red male or female to get a red spot on the caudal, all of her fish had this red spot on the caudal and she could tell it was from her stock whenever they were mixed with some pet store males or females.
I hope you know what I mean.
Fixing a certain trade mark to your line .... I don't know about this one. I have never done this. As far as I know bettas cannot pass on marks indefinitely. These markings will eventually disappear or will not show in every single individual.
Maybe it is possible when using certain traits. Such as buterfly - making butterfly with milk white markings instead of clear (this is now very rare in my country). Or Dalmation - making every individual show some dalmation spots. But dalmation cannot be used as a trade mark since the pattern is unpredictable and many have dalmation in their line. .... who knows, maybe new "trade marking" mutations will one day appear.