there is no divider between those fish, esp from this angle you would see where the divider comes out of the water. either you are trolling, which seems likely, or you are very new to bettas.
male betta fish can never ever be in the same tank space as each other, even males in divided tanks can get stressed to the point of chewing their tails off and dieing
I have to agree that it certainly doesnt look like there's a divider and they are such pretty boys you wouldnt want them to get all torn up would you?