IMO & IME; all anthias are on the difficult side. I think lyretails are one of the easier species, along with bartletts and dispars. Pink Squares are quite difficult; they are deepwater fish and much bigger than most anthias. They are very difficult to acclimate and will lose a lot of their brilliant colors in bright light. I've kept a lot of anthias and am convinced that they do better in pairs or trios---or even 1 male with several females.