So I added a male squareback anthias with two females already in the tank on October 3rd and I have never seen him swimming out and he just hides. I’ve never seen him eat either. It’s hard to see him but I don’t see any spots and breathing seems normal. Could he just be taking awhile to warm up? Is it normal? Maybe he has a disease? I’m really not sure never had a fish act like this and not die immediately or have some other noticeable issue.