We currently have our bettas housed with divider, its a blue divider with only 2 open slits at the bottom and can only catch glimpses of each other. Noticed bubbles at top of Heath's side, we looked it up and turns out to be bubble nest! They flare up as if trying to display themselves and it seems like Heath follows Bloo's movements even tho he can't see her. Guess what I'm asking is it normal for 2 newly housed bettas to already be displaying this behavior? Anyone know how long they will keep this up? How do you tell when betta reach maturity? We have no desire to let them mate as it said a female will lay 100 - 500 eggs!