GOBIIDAE Acentrogobius kranjiensis, NSMT-P 66095, 2.4 cm SL Acentrogobius kranjiensis (Herre, 1940) D VI - I, 10; A I, 9; P1 17 - 18; LR 24 - 26; PDS 6 - 8. Body moderately elongate, compressed posteriorly. Head slightly compressed; jaws subequal; gill opening not extending anteriorly to a vertical through preopercular margin. Pelvic fins united medially. Scales ctenoid, excluding those on nape, pectoral base and breast cycloid; cheek and operculum naked. Sensory canals and pores present on head; distinct transverse sensory-papillae rows on cheek; a pair of short longitudinal sensory papillae rows just behind chin. Color: about 5 midlateral dusky spots on body; some small dusky blotches on cheek; diagonal yellow line at upper part of caudal fin. Size: 3.0 cm SL. Distribution: Andaman Sea and West Pacific. Remarks: found in quiet waters of mangrove areas with soft muddy bottoms.