Hi all, my Flameback angel has been in my display tank for about 4 weeks now, and last night it’s swimming became more erratic and he was giving little head shakes. This morning he has been swimming around fine but a little quicker than usual. When I fed this morning he ate the most food I’ve seen it eat and it ate much more aggressively. Is this normal behavior or should I be concerned? Physically I can’t see an issues and my water parameters are all good. All the other fish in the tank are acting normally as well.