Paralabrax dewegeri has an elongate compressed body with a pointed head. The preoperculum is smoothly rounded and has fine serrations along its edge. There are three spines on the gill cover, the topmost spine is blunt and rather small while the other two are sharp. The
dorsal fin has 10 spines and 14 soft rays while the
anal fin has three spines and seven soft rays, with the ends of the soft rayed parts of these fins being rounded. The
caudal fin is truncate. The body is brown in colour, fading to yellowish brown on its lower part with seven vertical dark brown bars on the lower part of the body. There is a large dark brown spot at the base of the
pectoral fins which has a pale yellowish brown line running behind it. The paired fins are dark brown. This species attains a maximum published
total length of , although is more common, and it has a maximum weight of . ==Distribution==