[4] It is slate-grey in colour, the adults and subadults being unmarked unlike the spotted, parapatric painted sweetlips (D.

The dorsal and caudal fins are yellow with black blotches and discontinuous stripes which grow with age and fragment into small circular spots before fading away in adults.

[3] Diagramma labiosum is found at depths between 10 and 20 m (33 and 66 ft) over soft substrates within sea grass beds, mangroves and coral reefs.

[1] Diagramma labiosum Was first formally described in 1883 by the Scottish-born Australian naturalist William John Maclean with the type locality given as Wide Bay in Queensland.

[7] Diagramma labiosum is a common species which is caught using handlines and by spearfishing, the flesh is sold fresh.