I have a 6 lined wrasse and Ive had him for about a month. he has been coming out and eating. He was out last night and is now hiding in my rock. I've tried to move him out and he keeps going back. He would always be swimming out and active I dont know why he is hiding. I did a water change just incase something in the water wasnt pleasing him and he still wont come out. Anyone know why?