Platycephalus endrachtensis, or the bar-tailed flathead, bar-tail flathead, flag-tail flathead, northern sand flathead, northern-flag tailed flathead, sand flathead, western estuary flathead, is a predatory fish in the family Platycephalidae. It is found from the eastern Indian Ocean to the western Pacific, including in Australian and Indonesian waters up to 60 m (200 ft) deep over sand, at temperatures between 17 and 18 °C. The maximum length of the species is 62 cm (24 in), and its weight up to 5 kg (11 lb). A popular angling species, the specific epithet endrachtensis refers to Eendrachtsland, an early Dutch name for Australia, with the suffix -ensis, meaning "place". Venomous spines are hazardous for safe handling.