my lyretails did great and ate like pigs (only frozen mysis and plankton type food at first, then prime reef flakes). not a single loss (well until the tank broke). three females and a male. Key is getting them before the aggressive fish which is kind of the dilema since you want to add them to a sort of established tank. I ended up taking my tangs out for a week (by neccessity), re-aquascaping then adding them back after the anthias established themselves. bartletts are hardy too, some might say prettier than lyretail. the rest are a step below in the hardyness department though doable (square spot, pictilis to name a few).