They are adorable fish with a lot of personality, but as others have mentioned they do have their drawbacks. Other than the eventual 1' length, they are slow/awkward swimmers with fluttery movements that even chromis will pick on. Larger fish such as anthias or tangs can send them spinning in circles when juvenile. They will eat just about anything you throw at them so feeding shouldn't be a problem (deworm them). Unfortunately this animal does release a nonprotein poison, ostracitoxin, when stressed and has shown to decimate a tank (needs peaceful tankmates).