I must say I find the wild type much more interesting than the line-bred -splendens.Wow, I have never seen bettas like that. Thanks for the posting.
Some of the wild can be kept in shoals with more than 1 male.
The one above, Betta albimarginata is a mouthbrooder from Borneo.
I also have a small group of Betta edithae (pic below)in the same tank as the pair of albimarginatta.