Common in coral rich areas and clear waters of lagoon and seaward reefs. Sometimes found on outer subtidal reef flats (Ref. 1602). Juveniles secretive (Ref. 48636). Feed on filamentous algae, corals, and benthic invertebrates. Often in pairs during breeding (Ref. 205), monogamous (Ref. 52884). Oviparous (Ref. 205). Occasionally hybridize with C. pelewensis in the southern part of its range (Ref. 9710).