We picked up another Betta tonight, and I am not sure that it was identified correctly.
The picture doesn't really do him justice as he is much brighter colored than it shows. But they had him labeled as a Half Moon Double Tail. I really don't see the double tail and am wondering if he is actually something else. Maybe a Rose Tail? His tail seems to overlap the dorsal fin and caudal fin, which I believe would be atypical of a half moon.
The female on the other side of the divider gets him all worked up so it's been hard to get a good picture, but here are a couple I have.