my aquarium is big and crowded with many plants , i guess they will not see eachother much.He definitely looks like a "big ear" betta.
You should separate your male and female unless you are breeding them; one will probably end up killing the other.
clayfish will be there for temporary, she will be moved by soon.as you and others says , i am going to separate them unless i have breeding plan.Also, as well as what the other posters have said, what kind of crustacean is that in the picture of the female? It looks like a crayfish to me, and they will kill your bettas as well. Especially the slow moving male...
They are beautiful, but they need to be apart unless breeding, and you need to be very weary of that crayfish.