Second dorsal-fin spine elongate slightly, its length 1/2 depth of body or even longer, and
about 1/2 as long again as length of pectoral fins; upper half of body with mainly vertical,
dark brown, wavy lines, some broken into shorter segments and dots; a yellow brown
line across spinous parts of both dorsal and anal fins at a height corresponding to
margins of soft parts of these fins; yellow blotch about size of eye half-way between base
of pectoral fins and first anal-fin spine (said to be absent in some Australian populations)