That looks like a male Betta albimarginata. I have a pair of those living together, although they're finicky as anything and only eat frozen brine shrimp.
Wild bettas are great and actually fairly easy to own, although they can be really
shy. One of mine never comes out from hiding even though I've owned it for nearly a month now.
Here's a shot I took of my female Betta rutilan. My male and her spawn every two weeks or so without me needing to do anything. I would recommend wild bettas to anyone who likes a biotope style set-up.