So I thought my jacks paired, but it seems that every site says they liplock and fight when mating. I introduced my killer 8" male jack to a tank with a 4.5" female. She follows him everywhere and he lets her and they even share a cave, he is aggressive to all fish but her. I notices sometimes she looks like shes cleaning the cave top (which is flat), but I have not seen any eggs. Was I wrong and the fact that they seem to like eachother mean that they are not a pair?