Provided the aquarium conditions are correct and the fish are in breeding condition, once the female is added to his tank or vice versa, the male will start to build a nest on the surface of the tank out of bubbles that he makes. He may well incorporate bits of plant to add strength to the structure. Every now and then he will swim up to the female and flash his fins and try to encourage her to go with him under his nest. Once he has achieved this and the female is with him under the nest he will wrap himself around the females body embracing her. The pair will remain trembling in this embrace for a few seconds. Then the male will gently break away and the fertilised eggs will start to drop towards the bottom of the tank. He will collect these eggs and blow them into the nest. Then the process of embrace, collect etc will continue until the female is spawned out and he drives her off. This is the time to remove her otherwise the male will kill her.
The fighting fish will be funny and active, but what is funny to you is a ritual dance to the males.
the male releases hi sspirm and the female releases her egss and they get to each other and then what ever gender of spirm reaches the egg first is the gender of the fish