Distinguished by the following characteristics: slender Redigobius; body brownish above and pale below; scale margins on dorsal 2/3 of body outlined in dak brown, forming reticulate pattern; five dark brown vertical blotches in line along side of body and distinctive U- or W-shaped black mark above pectoral fin base; large dense black spot present on rear of first dorsal fin; head may be enlarged and fleshy in adult males; compressed body; tall dorsal fin, with spines prolonged, fourth spine usually elongate in males; second dorsal fin rays I,5-8; anal fin rays I,5-7; pectoral fin rays 16-19; longitudinal scales 23-26, TRB 7-9; predorsal scales 6-11, reaching to close behind eyes (Ref. 84480).