Hello every one I'm new to reef central.... I have a 55 gal FOWLR for 7 months now... I have 2 false perc clowns, 1 Pygmy angel, 1 green chromi,1 diadema dottyback, chocolate starfish, and a lyretail anthias... My concern is that for the past 2 weeks the anthias has stop swimming like she use to and lying around in the rock and sand bed.... This morning I notice that half her face is some what reddish...I've had her for abt 2 months and she has been eating fine she even ate last night.... This is my first fish tank and I have no idea what to do.... Any input and advice is welcome...