I'm basing the low survival rate on what I've heard online (a lot of celebrations of receiving coccina types, and then...) and observations in my local club. In that - no sensible person buys just one wild betta, and losing part of a pair or group is considered losing them to me.
In the similar albimarginata, when I've bred them, I did a couple of generations, but not one of the fish I distributed in our club was ever bred. The fact I was still breeding them says they were healthy stock, but while people got excited about getting them, six months later they were nowhere to be seen.
About a week ago, I was looking at a list like the one you posted, and decided to spend my Canadian dollars on other fish. Those bettas and licorices were soooo tempting. But the availability is there, and people buy them or they wouldn't be listed. I think you'll find you've chosen a difficult specialized corner of the hobby. I also think you'll do well. I expect you'll be that one in ten.
In the similar albimarginata, when I've bred them, I did a couple of generations, but not one of the fish I distributed in our club was ever bred. The fact I was still breeding them says they were healthy stock, but while people got excited about getting them, six months later they were nowhere to be seen.
About a week ago, I was looking at a list like the one you posted, and decided to spend my Canadian dollars on other fish. Those bettas and licorices were soooo tempting. But the availability is there, and people buy them or they wouldn't be listed. I think you'll find you've chosen a difficult specialized corner of the hobby. I also think you'll do well. I expect you'll be that one in ten.