In the wild, C. moorii feeds exclusively by following F. rostratus, M. lateristriga, & T. praeorbitalis. These latter three fishes hunt by digging & subsequently filtering large amounts of sand through their gills. In the process, they stir up a great deal of detritus, exposing crustaceans and other small food items. Interestingly, C. moorii will defend its ''host'' against conspecifics and other followers (eg, P. annectens). When dominant or courting, males turn dark blue; otherwise, they usually display three dark blotches on their flanks.