Also known as Black-spotted Grunt, Black-spotted Sweetlips, Spotted Grunt, Spotted Sweetlips, Sweetlips.
Found in large schools close to ledges along coral slopes during the day, out hunting for food at night over sand banks of estuaries and coastal reefs.
They feed on benthic crustaceans, fish and invertebrates.
Length - 50cm
Depth - 3-55m
Widespread Western Indian Ocean
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.