Technicaly, tetrafan, that pearlscale goldfish, though it looks like any balloon tropical, is not 'balloon' as we would reffer to kissing gouramies or mollies simply because it is a mutation in kissers and mollies (that was then taken advantage of just as a new color morph would be) while, in the case of goldies, it was selectively bred from slightly deeper-bodied fish to look extreme like that. Anyway, ignore my nit-picking. It realy doesn't matter how they came about - none of these fish (balloon rams, balloon kissers, pearlscale goldfish) are hybrids. I would say the same for mollies but 'common' mollies are hybridised anyway...