Bettas will live with almost anything EXCEPT Gouramis. Mine (20 + Females and 2 YES 2 males) live with a full cross section . Swords, loaches , pictus, hatchets, danios, tetras (Cardinals and Rummy nose), Mollies , Guppies, Sharks, Sydontis, Coris, Khoolies, Banjos, Bristle nose, White cloud mountain minnows, etc etc etc.
No Probs, But the gouramis had to be moved as they killed the male betta