The king threadfin is a large threadfin which can attain a maximum total length of 170 centimetres (67 in) and a maximum published weight of 45 kilograms (99 lb), although the more common total length is 48 centimetres (19 in).

[1] It has a pointed snout and the dorsal profile of the head is almost flat in young fish and concave in adults.

[1] The females spawn pelagic eggs but little is known about the larvae[3] although the nursery areas are inshore, shallow and of low salinity.

[1] The king threadfin is one of the most important species in the fisheries in the Northern Territory, Queensland and Western Australia and it is caught mostly using coastal set gillnets, and also using fixed tidal traps, beach seines, ring nets and handlines.

The fishery in the southern part of the Gulf of Carpentaria is dominated by males in the age range 3-6 years old.

[2] It is a popular sport fishing quarry too and in Queensland and Western Australia there are minimum sizes which can be taken and a bag limit.