True but another thing to remember about fish vs horses is that form affects function. The better a horses conformation the better they'll typically "hold up", betta's are bred for looks and while this is important in horses to, Betta's don't "really" have the same sorts of selections pressures against them. Really streneous preformance events for horses (racing, jumping, dressage, or pulling in the case of drafts) make it pretty clear what veriations will and won't make it.I was just curious because both of my CT boys have the hump like your Nighthawk does, but I think James is my only VT boy who has what could even remotely be considered a hump. Just looking at Emmett, my feathertail, and Amun, my halfmoon, Emmett has the more pronounced "hump" like the CT boys do, but Amun has a topline closer to MM's boys. Again, it was a curiousity question since I know that the lady I work for has two arabs who have completely different toplines, yet they are both considered acceptable (maybe not as halter horses, but as hunter/hack horses definitely).