GOBIIDAE Acentrogobius viridipunctatus, 5.5 cm SL (photo by Koichi Shibukawa) Acentrogobius viridipunctatus (Valenciennes, 1837) Spotted Green Goby D VI+I, 10; A I, 9-10; P1 19-20; LR 33-35; PDS 27-33. Body moderately elongate and compressed. Head slightly compressed; jaws subequal; gill opening extending anteriorly to a vertical through posterior margin of preopercle; single or some enlarged caninoid teeth on each side of lower jaw; tongue truncate. Pelvic fins united medially; frenum present. Scales ctenoid, excluding those on head, nape, pectoral base and breast cycloid; upper part of cheek and operculum scaled. Sensory canals and pores present on head; distinct transverse sensory-papillae rows on cheek; aggregation of sensory papillae just behind chin. Color: numerous bright light green or blue spots on head body; L-shaped dusky marking below eye. Size: 12.0 cm SL. Distribution: Indo-West Pacific. Remarks: found in tidal estuaries, lagoons and bays with sandy-mud bottoms.