their rarity seem to come and go. about 6 months ago, the pet store i go to had about 6 of them. that was the first time in nearly 5 years that i'd seen them there, and i haven't seen them since. my walmart had only the pineapple dals, and that was 2 out of... maybe... 20 total bettas?
it's a hard thing to breed for, maybe, but doesn't mean you shouldn't try. x: i've been researching it for a while now, but it's not something everyone tries for, like butterfly or dragon, so there's no one who says "you gotta breed this to this, to get it" like with the more common types. x: