Pet store Betta are not "genetic mutts." Many come from local breeders who know more about their Betta's lineage than do the exporters. And one of the biggest distributors of pet store Bettas in the US knows exactly what they are breeding to produce a particular color or finnage.
All of my Betta are imports and most have excessive finnage. That being said, if exporters were breeding dogs they'd be called puppy mills....producing only to fill make $$ with little regard to maintaining a standard. I've seen far too many touted "imports" on eBay and elsewhere that go for big bucks have have spoonheads, uneven finnage, finnage too small for the body, uneven color in those with patterns, excessive finnage, etc.
If you want to a Betta that isn't a "genetic mutt" you find a breeder who belongs to the International Betta Congress (IBC) and breeds to those standards. They very carefully choose parents and keep records of lineage.
Let me add: Your boy is a real beauty.
This is a Betta farm and how imports, including mine, are kept.
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