I mean the tank he was in at the store had no cover for him and very bright lights and he was a nasty SOB, finger chasing and facing off with me. Im surprised the change of tank causes such a reaction, my lights when full on are more but only running 2 of 4 for the first while to get him settled.
But the food thing is common with me, Ive got leaf fish to eat pellet in under a week. Pike livebearers eating flake. So i wasnt shocked when he ate it but it actually wasnt for him, I wasnt even trying.