Thought I'd share this link to a blog page that lists and pictures a lot of wild betta species.
My favourite's the macrostoma. I really hope to keep these fish some day (and I've found a local breeder with some fry that will ready to be sold next year.. oh, bettas how you tempt me! ..) but check out the CUTE little B. persephone. How adorable is that? :B
I also like breviobesis.. and burdigala... picta .. and unimaculata. And channoides, which are also really beautiful.
If you could keep any wild betta, which would you choose?