Trilo, that theory makes sense... I'm sure there are young fish that have white ventrals because they are young, but there most definitely are fish that have white ventrals for their entire lives. I remember BasementBettas (An excellent breeder who I trust a lot) saying that she will breed fish with white tipped ventrals but you have to be careful to only breed fish without them in further generations. I forget where she said it so I can not get the exact quote... Sorry. If you breed him (he is a really nice fish!) get a female that doesn't have them and preferably doesn't have a history of them in her line.