I acquired two wild caught Rio Mag Umbees a little while back. Both specimens have been growing at nearly identical rates and are virtually the same size (Although one has a wider profile and is thicker). Initially i put them in the tank undivided and the beefier one nearly killed the other within an hour. Due to their similar sizes and aggression towards one another i figured they were the same sex (i assumed female). I've since had them divided in the tank and they have shown minimal interest in one another through the divider. About a week ago i pulled the divider. The fish immediately began showing a bit of interest in one another and no aggression what so ever. Today i did a 50% percent water change and the fish started showing what i believe is spawning behavior. I took a few videos to post for some feed back/opinions. Let me know what you think guys!!