Somber Sweetlips

Found singly or in small schools, over coral and rocks, in surf zones of fringing reefs, they also enter estuaries and rivers.
Juveniles found in tidepools.

In some areas of the world 'Grunts' are better known as 'Sweetlips' distinguished from other species by their very large rubbery lips.
'Grunts'because they "grunt," the grunting sound is produced by their flat teeth plates rubbing together and this is amplified by their air bladders.
Found either singly or in schools hovering or motionless over the reef during the day, becoming nocturnal predators.