I am certain this was mentioned in a thread before but I find it pretty cool. The boss of 4/5 of my tank is the male venustus and the other 1/5 belong to my friends fusco when the lights are on. This morning when I got home from work I set on the sofa and watched my fish without the lights on just the light coming from the windows. I noticed all my fish on one side of the tank and I thought that they were waiting for food but the fusco swam to the other side(his side) and I watched my livingstonii chase him back to the other side and do his dominant dance and I just watched as he chased all the fish that came near him. When I turned the lights on the fusco and venustus were back in the drivers seat. I found this strange that a fishes dominance can change depending on the lighting.