My angels have been acting weird since last thursday when I did a 30% WC and rescape the tank a little. Now when I don't go near the tank they all hang near the top corner of my tank with their fins clamped and 2 are breathing a little faster than usual, When I go near the tank they all come swimming towards me and they are eating well, but the moment I live them alone they go back to that corner pointing head up to the surface. I check all my water parameters and they came out good, the rest of my fish are normal it's just the angel??? Does anybody know if there's something going on with them??? I really need to know cause I have 2 wild angels on hold for me and I don't wanna take them home when all the rest of my angels might be sick....