I took this video, shortly after the Siamese Fighter fry has hatched. At this stage the Female is already removed, and it is only the male present in the tank. (I actually have them in my cherry shrimp tank). The male is looking after the fry and will take fry that fall from the nest and put them back in the nest. He will also protect the babies against any danger, like other fish. This is the reason the female is removed, as the male will see her as posing a danger to the fry and he might kill her.