In this video, I released the Siamese Fighter Female, into the company of the male, after I kept her in a separate container for a day, in order for them to get used to each other.
The male is still showing some aggression towards the female, but this is normal. I provided a lot of hiding place for the female to get away from the male. In some cases the male will even bite the female and she could suffer some damage to her fins.
In this case everything was quite peaceful!!