Awsome stuff agansoo

I just discovered that i think my banggai pair are actually both the same gender, they used to get on fine, but now one of them chases the other one to the other side of the tank and doesn't let him move... Is this because they're both the same gender and they're fighting over territories?
It's a real bummer if it is, because i always feel bad if i don't get fish what have babies. I don't know why, but I feel if my fish have babies, then its like i'm doing something back for the fish... stupid i know.