First of all, male and female fighting fish (bettas) shouldn't be kept together. They are both territorial and agressive. They may be fighting over territory. It may also be that the male is ready to mate and the female isn't.
yes they can.
I don't think so.
no you can not put a female and male fighting fish in the same tank because they will just kill each other
two Males or two females? they are fighting over territory tring to find out who is the superior one. if 1 male and 1 female i think you know
Fighting Fish do eat each other so, yes
No. The females will kill each other.
no because they will end up killing each other
only if your breeding.
If its a male probably yes if its a female it will not
The male of the species has brighter colours and is a much larger fish than the female
Yes, but only when the male/female is too old or too young.
They do not normally get a chance to pick. The male will kill her if she will not or can not spawn with him.