Not sure on mine. There was an incident last week where the male turned on the female and was keeping her locked in one of the top corners of the tank. Every time she moved he would attack her again. He was still guarding the fry though. I gave him a time out in the 55g with the 5"/3.5" JD pair, who picked on the male Con for about an hour, basically to give the female a break.
I put the male back in with her and she started attacking him too, but it was more like a 'pairing off' dance (lip locking, circling each other, etc). Apparently they worked it out over that night cause the next day they were best friends again. I didn't see any fry harmed during the entire thing though, and they are still being protected. I don't expect it to be much longer before they start getting picked off though. The 20L tank is going to start getting really crowded with 300+ 1/2" fry in there.