Just got a new White banded possum wrasse and tiger goby from satlwaterfish.com. The goby was completely fine but the possum wrasse was laying sideways in the bag. I immediately started acclimation and he started t become a bit more active but still off balance. When I put him into the tank he swam over to a cave in the rocks and hasn't moved since. I'm just a little bit worried that he has died. Is this normal behavior for this fish? I'm not sure if it was just didn't have enough oxygen in the bag and it's recovering so does anyone know?