The dusky flathead or black flathead (Platycephalus fuscus) (literally translating from Ancient Greek as "flat-head dusky") is a large predatory fish and the largest member of the Platycephalidae family. Dusky flathead are a largely estuarine species and are found in estuaries, estuarine lakes and coastal bays on the east coast of Australia, from Cairns in Queensland to the Gippsland Lakes in Victoria.