GOBIIDAE Mugilogobius chulae, 2.8 cm SL (photo by Ukkrit Satapoomin) Mugilogobius chulae (Smith, 1932) Two-spot Mangrove Goby D VI + I, 6-8; A I, 6-8; P1 12-16; LR 25-32; PDS 11-15. Body moderately elongate and compressed. Head slightly depressed; interorbital space broad; gill opening not extending anteriorly to a vertical through preopercular margin. At least some middle spines of first dorsal fin elongate and filamentous; pelvic fins united medially; frenum present. Scales on body ctenoid, excepting those on predorsal area, pectoral base and belly with cycloid scales; head naked, except for upper part of operculum with cycloid scales. Sensory canals and pores absent on head; longitudinal pattern of sensory-papillae rows on cheek; uniserial transverse sensory-papillae row just behind chin. Color: head and body grayish white, with several oblique black bars and speckles; distal margin of scale pockets dusky, forming reticulated pattern on body; black spot at center of first dorsal fin. Size: 3.9 cm SL. Distribution: West Pacific and Andaman Sea. Remarks: found in under objects (e.g., rubbles and leaf litters) on sandy-mud bottoms in shallow mangrove swamps and tidal estuaries.