Spotted sillago

The King George whiting has the same overall profile as the rest of the sillaginid fishes, an elongate, slightly compressed body with a tapering head and terminal mouth. The genus Sillaginodes is distinguished by a first dorsal fin with twelve or thirteen spines and the second dorsal fin with a single spine and 25 to 27 soft rays. The vertebrae number between 42 and 44 in the genus. The King George whiting is the only member of the genus Sillaginodes and is further distinguished from any other possible taxa assigned to that genus by a number of distinct anatomical features. It is the largest of the Sillaginid fishes with 129 to 147 lateral line scales, and like all fishes in the family is best distinguished by the shape of its swim bladder. In plan view, the swim bladder has a land slug-like appearance, with a posteriorly tapering extension and two anterolateral extensions or ‘horns’. There are no duct-like processes on the ventral surface unlike taxa in the genus Sillago. In situations where identification is needed quickly, the colour of the King George whiting is also very distinctive, with a pale golden brown to olive brown top colour and white to silver colour on its underside. The species also as distinct obliquely positioned rows of brown spots running the length of its body, which are apparent to see even after removal from the water and after death. The caudal, anal and pectoral fins are usually a light brown, with some having olive green caudal fins. It is the largest member of Sillaginidae, growing to a maximum length of 72 cm long and 4.8 kg in weight.