GOBIIDAE Pleurosicya prognatha, 1.1 cm SL (photo by Ukkrit Satapoomin) Pleurosicya prognatha Goren, 1984 Beaked Ghostgoby D VI + I, 8-9; A I, 8-9; P1 14-16; LR 15-27; PDS 0. Body moderately elongate, compressed. Head slightly depressed; snout pointed, with elongate, curved beak-like upper lip; upper jaw projecting anteriorly beyond lower jaw; gill opening not extending anteriorly to a vertical through preopercular margin. Pelvic fins united medially; frenum present; skin around pelvic-fin spine thickened, forming a lobe-like appearance. Scales on body ctenoid; head naked. Sensory canals and pores present on head; reduced longitudinal pattern of sensory-papillae rows on cheek. Color: head and body subtranslucent; viscera tinged with yellow. Size: 1.5 cm SL. Distribution: Indo-West Pacific. Remarks: found in coral reefs; commensal with corals of the genus Acropora.