Polydactylus quadrifilis

Diagnosis: detached pectoral filaments short, only slightly longer than upper pectoral fin; base of anal fin as long as base of 2nd dorsal fin; body moderately elongate and compressed, its height comprised 4.0 to 4.5 times in standard length; snout very short, blunt and prominent; mouth inferior; maxillary bone distinctly widened at its end, reaching largely past eye; 2 widely separated dorsal fins, 1st with 8 flexible spines, 2nd with one flexible spine and 12-13 soft rays; 2nd dorsal fin and anal fin bases nearly equal; pectoral fin inserted very low on body, threadlike filaments 4 in number, generally somewhat longer than upper part of fin; scales ctenoid; head scaly (Ref. 57402). Coloration: body uniformly silvery, greyish on back, shading to whitish ventrally; fins yellow or grey; a dark blotch often present on gill cover (Ref. 57402).

• Polynemus quadrifilis Cuvier, 1829
• Trichidion quadrifilis (Cuiver, 1829)