Parrotfishes are widely considered to be important grazers on coral reefs that remove autotrophic biomass from the reef substrate and create bare space that is conducive to larval coral settlement and recruitment. Because of the top-down effects associated with their benthic foraging, this has been a major focus of parrotfish research. Another aspect of parrotfish foraging and trophic ecology that has received very little attention is coprophagy, the consumption of fecal matter. The feces of...