Many Australian flatheads can be recognised by the patterns on their pectoral and caudal fins. The pectoral fins of the Dusky Flathead have rows of fine brown spots. The tail is blueish grey below, spotted above and has a dark spot near the margin. The body varies from dark brown to sandy with spots.
This species lives in a range of habitats from sheltered rocky reefs to sandy or muddy areas. It is recorded from southern Queensland to Victoria, from depths of less than 1m, down to 25m.
The Dusky Flathead is the largest Australian flathead species, reaching 1.2m and a weight of at least 15kg. It is often caught by anglers in New South Wales.