GOBIIDAE Cryptocentrus leptocephalus, 6.0 cm SL (male; photo by Ukkrit Satapoomin) Cryptocentrus leptocephalus, 6.6 cm SL (female; photo by Seishi Kimura) Cryptocentrus leptocephalus Bleeker, 1876 Pink-speckled Shrimp Goby D VI+I, 10; A I, 10; P1 17; LR 73-79; PDS 0. Body elongate, compressed. Head slightly compressed; jaws subequal, not reaching to a vertical through posterior margin of eye; gill opening reaching anteriorly around a vertical through posterior margin of preopercle. Pelvic fins united medially; frenum present. Scales cycloid or weak ctenoid; head, breast and pectoral-fin base 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: several diagonal reddish-pink bands on body; reddish-pink spots and lines on head and dorsal fins. Size: 10.0 cm SL. Distribution: Andaman Sea and West Pacific. Remarks: found in estuaries, mangrove area and protected bays with sandy-mud bottoms; symbiotically associates with alpheid shrimps.