Very nice little tanks, and cute betta! I can only find the one, though, do you have any more pictures? I've always liked wild bettas, they have nice patterns.
Have you ever kept B. Albimarginata? I'm looking into getting a few, and I'm not sure what kind of aquascaping they prefer. I'm probably going to use a big piece of driftwood to provide an open-but-shaded area, and there'll be plenty of crypts and stuff for things to hide in. I plan to also keep about a dozen pygmy cories, a large-ish school of something like ruby tetras, and probably also ten or so diptail pencils. I doubt the pencils and rubies will bother them, but do you think the active little pygmies will upset them?
Wild type bettas are very shy, and generally do not appreciate tankmates of other fish species. They won't hurt anybody though, especially not other fish that are quick. You just might never see your albies in a tank with other species. Of course they generally won't breed in such a tank either, as they are paternal mouthbrooders and the males often swallow their broods when stressed.
I keep all my wilds in species only tanks for this very reason. I have considered keeping microrasbora as dither fish in my b. rubra tank, as they are too small to be a real threat to fry, but my male just does not tolerate certain kinds of stress when he's holding, and I want his babies LOL.
Good tankmates are mystery snails and dwarf shrimp, assuming the shrimp will tolerate the low pH required by most wild type bettas (pH needs to be below 6 for most of the smaller species, including albies).
Albies are on my list too, I really love their coloring. They look like tiny macrostoma! And I'm nowhere near diligent enough of a fishkeeper for macs, so albies it will be, one day haha.
Here is a shot of my b. hendra male tending a nest. Unfortunately the eggs never hatched and eventually he gave up, but you can at least see how diligent he was and how lovely his blue colors are.
I don't have any great shots of my b. sp apiapi, as they are easily the shyest fish I've ever seen, but I do have a video of them on my youtube channel here
. You really get to see the male's personality in this vid haha. He's a bit of a jerk, as with all red bettas.