I have noticed a couple of times now a few of my cichlids have dipped down for a little scratch on the rocks. Does anyone know what this is a sign of? Is it normal for the odd occasion?
The only ones that I have noticed are the two blue peacocks. Everything in the tank seems normal I can't notice anything on the fish.
Nitrates 20 (this was last Sunday just before I did a water change)
Any ideas or am I looking too much into it?