All my fish, Powder Blue, Achilles, Yellow, Hippo, Purple, and Powder Brown/Gold Rim tangs eat it.
My Potters, Lemon Peels, Coral Beauty, and even Rock Beauty eat it.
Both the Auratus & new Heniochus Butterflies eat it. I don't think my Copperband ate it because it mostly ate Aiptasia & bloodworms before it died.
I also use the 1mm pellets (Spectrum Thera+ and Marine Fish Formula). My one concern is that it sometimes floats a little before sinking although with Chin's new maxi-jet mods, there's so much surface agitation the pellets sink & shoot around the tank immediately
Anthony