Recognized by hinged part of dorsal fin spine. Variable in color with habitat. Greenish-yellow with diffused stripe when in seagrass environment. Pale with black stripe when found on open substrate with white sand or rubble (Ref. 48635).

Description: Characterized by extremely thin or flattened and nearly transparent body; snout through eye, to base of caudal fin with dark brown to blackish stripe; horizontal first dorsal spine, projecting beyond tail tip, posterior part with movable segment; striated interorbital without groove (Ref. 90102).