sorry to hear that . angels sometimes are threatened by other angels and will not eat or move because of territory. fish are hard to keep . right now my lemon peel angel has been sparring with one of my lavender tangs . so I've been feeding alot more . I think im going to house my lemon peel in her own tank.Interesting. I thought the two were fine and this thought definitely hit my mind. I watched them all the time and i didn’t see one bit of aggression but maybe I was wrong sadly I lost the lemon peel