Distinctive Characters: Dorsal fin with 9 spines and 11 rays. Anal fin with 3 spines and 11 rays. Total gill rakers 22-24. Body depth 2.4-2.6 in standard length. Lips very thick and fleshy, the lower deeply incised in median line. Caudal fin slightly rounded.
Colour: Dark, almost black, sides with several white bars on body. Face brightly patterened with red and green. Juveniles have more and thinner white bars than adults.
Habitat and Biology: Found more in protected reefs than exposed reefs at depths up to 20 m. Feeds primarily on small crustaceans, molluscs and echinoderms.
Remarks: Hamigymnus fasciatus feeds by taking mouthfuls of sand, sorting the material for a few moments to extract animal material, and ejecting indigestible sediments from its mouth or gill opening.