As I type this, I am currently keeping Betta Unimaculata, Betta Falx, Betta Rubra, and my domestic splendens. In the past I have kept betta bellica (the only bubble nesting wild species I have kept), betta pugnax, betta edthea, betta simplex, and betta midas. While almost all of these species of spawned for me, many of them ate their offspring. I have had the best luck with the bellicas, unimaculatas, and simplex.
The number one question I get about wilds is: Where do you get them? And the answer to this is a complicated one. The most reliable source is Aquabid.com. Most of the species I have kept came from there. But other ways include IBC shows (this is how I got my Unimaculatas and Falx), or just dumb luck and finding some mislabled fish in a pet store (this is how I got my betta pugax!).
I would suggest, however, that before you buy your new wild bettas, do research on the different species. Many have water and housing requirements that are vastly different from the betta splendens you are familiar with. Failing to meet the requirements of your wild types will ultimately end with their deaths and you out of money.
My goal here is not to explain about wilds or give you the specs on these fish. I just want to touch on them because, they are really cool fish! Below you will find some videos of my current wilds. I hope you enjoy!
Below is a video of my betta falx spawning. it is in black and white
and was shot with a sony handycam with night vistion. Sadly this male
and 3 others, all proved to dislike my setup and ate the eggs each and
every time they spawned. They were kept in a 20gal planted tank with
driftwood, black substrait, and very low light.
These are
betta unimaculata, one of the largest mouth brooding betta species. I
was lucky enough to win 2 pairs at an IBC show in 2016. After several
failed attempts at spawning them, I did get fry..and more fry...and
more fry..and at this moment am up to my eye balls in betta unimac fry!
But I posted the videos in order of how things came to be. The first
video shows one of the pairs courting. The female opens her mouth and
shakes her body at the male, then he does this in return. they did this
for days the first time. After along cortship, they spawned shortly
after night fall. every time my 2 pairs have spawned, it has ben right
at sunset and they end an hour or 2 after sunset.