GOBIIDAE Cryptocentrus maudae, 5.9 cm SL (male; photo by Ukkrit Satapoomin) Cryptocentrus maudae Fowler, 1937 Maude's Shrimpgoby D VI+I, 10; A I, 9; P1 17. 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 minute, cycloid; head, breast and pectoralfin 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: ground color of head and body blackish brown; anterodorsal part of eye, interorbital space, snout and anterior tip of lower jaw pale or pale brown; several pale or pale brown saddles on head and body, in addition to numerous minute pale spots; anal fin with 5-6 diagonal black lines. Size: 10.0 cm SL. Distribution: Andaman Sea and West Pacific. Remarks: found on shallow coral reef habitats with sand and rubble bottoms; symbiotically associates with alpheid shrimps.