Hi everyone, Got some new discus (2). I separated them initially and then introduced to test of fish last night. This morning I’m witnessing behaviour I haven’t seen in my discus before and wonder whether it’s aggression or mating or just trying to find thebe reposition in pecking order. What you see is one of the older fish (used to lowest in pecking order) with the two new fish. The older fish (apart from one showing) have grown quite big, I put the size of this one down to domination. As you can see it looks the same size as the 6 month old new entrants.