Also known as Australian Slatey, Blacktail, Bluey, Grey Sweetlip, Moke, Morwong, Mother-in-law Fish, Painted Blubberlip, Painted Sweetlip, Painted Thicklip, Painted Thick-lipped Grunt, Sailfin Rubberlip, Slate Bream, Slatey Bream, Slate Sweetlip, Slatey Sweetlip, Smokey Bream, Sweetlips, Thicklip Bream, Thicklip, Trout Sweetlip, Yellowdot Sweetlip.
Found singly or in schools during the day often in murky waters close to debris, rocky outcrops and wrecks dispersing at night out hunting for food over open waters of bays, estuaries and coastal coral reefs.
They feed on fish and benthic invertebrates.
Length - 95cm
Depth - 1-170m
Widespread Indo-West Pacific
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. Ref: https://www.fishbase.se/summary/4465