My male pink square anthias is a pig and will eat just about anything, including NLS pellets, frozen mysis /clams / squid. The two females, on the other hand, will not eat pellets. They're luke warm about frozen mysis, but they go nuts for frozen clams. So, I feed a 50/50 mix of frozen mysis and clams.
When I go on vacation, I take an ice cube tray and fill one cube for each day I'll be gone with RO/DI water. Then I thaw out & rinse mysis, clams, squid, etc, stir it all together, and add the mix to the cubes. Then I add a scoop or two of cyclopeeze and a scoop of Coral Frenzy. Put it all in the freezer, and then my fishsitter only has to pop an ice cube a day into the tank. The fish eat it up as it thaws.