Yeah, it’s hard to tell how bettas will react to anything. I have empty ( cycled ) tanks I could always put them in. As for the shrimp, I was wanting something where their population would be kept in check but they wouldn’t be decimated, y’know? Would khuli loaches or pygmy corys be a better choice with a betta?
So probably not the best choice, huh? Are apistogrammas the same way?