Description
The golden lined whiting has a very similar profile to other members of the genus Sillago, with a slightly compressed, elongate body tapering toward the terminal mouth. It differs from some members of the genus in that its ventral profile is more rounded than most other species, which tend to have a flat profile. The number of spines and rays, vertebrae and swim bladder morphology are other distinguishing features. S. analis has a first dorsal fin consisting of 11 spines followed by a second dorsal fin consisting of one spine and between 16 and 18 soft rays. The anal fin has 2 spines followed by 14 to 17 soft rays. Over the distribution of the species, the vertebrae number differs, with fish in Western Australia having 33 and those in south east Queensland having one or two additional modified vertebrae. Also varying over the range is the lateral line scale count, with Western Australian fish having less than Queensland fish, with the range for the species between 54 and 61 scales.
The swim bladder of the species is very similar and in some cases indistinguishable from a related species, Sillago ciliata, with the anterior part of the swim bladder having rudimentary tubules projecting anteriorly and a lateral series of tubules that diminishes in size and become sawtooth-like, projecting posteriorly.
The golden lined whiting's common name is derived from its colour, having a dull golden-silver to golden-yellow band running longitudinally on the sides below the lateral line. The body is an overall silver colour, being slightly darker above. The pelvic and anal fins are pale to bright yellow, while the pectoral fin has a darker dusting of fine black-brown spots with no black spot at the base.
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