So today I added 5 black neon tetras and 2 dwarf frogs to my tank. I know that is quite a few fish with my betta also, but it was the last 5 black neons they had and I could not split them up. Everyone is getting along fine and my betta Gunner seems to like messing with the tetras as far as he will swim up next to them but not chase them. I think it is goin to all work out fine.