I'd have to look to be exact, but I think between 3 1/2 and 4 months old Thanks! They really are somethin'!
I wonder how they'd react if I put them next to each other The son has been really sulky lately BUT he's been alone with sister all this time, so last night I moved him and her beside some other bettas and this was the reaction I got out of him. Guess he just wanted to see another male to be true to his fighting senses