So something super bizarre is going on between my newly added tricolor fairy wrasse and bristletooth tang… so a few days ago I added a new member to the tank which is a tricolor fairy wrasse during the day everyone is happy and no signs of aggression but when the lights go off during the night my bristle tooth tang would chase and attack my new fairy wrasse so aggressively and try to attack him with his spikes non stop until my wrasse is able to hide between a corner of my tank… I added new rock work to help have more hiding spaces for the wrasse and even changed the rock work design but it didn’t matter the tang would still aggressively attack my wrasse only during lights out but when the lights are in they are all swimming with no issues… can anyone tell me what is going on here?!?!