Cichla kelberi pairing / males fighting / pre breeding behavior

Dirty glass on the outside, algae on the inside, reflections from other tanks and an over all cloudy water because of recent feeding... Sorry about that. But I had to share this, because the kelberi peacock bass were looking super nice! And they had some interesting behavior going on. You can clearly tell the big male (with the developed nuchal hump) is trying to mate with the female (the one without any nuchal hump and a round belly), and is fighting of the other big male at the same time. Or at least they are looking for a spot to breed. Not too easy in a tank with a lot of traffic...