CHAETODONTIDAE Heniochus acuminatus (photo by Ukkrit Satapoomin) Heniochus acuminatus (Linnaues, 1758) Longfin Bannerfish D XI, 23-27; A III, 16-19; P1 16-17; LLp 49-52. Body very deep; snout moderate, pointed. Lateral line complete. Fourth dorsal-fin spine greatly elongate, filamentous, often exceeding length of body. Caudal fin truncate to slightly rounded. Color: overall white, with 2 broad, oblique, black bands on sides, the first continuous with black pelvic fins and the second from middle of spinous portion of dorsal fin to posterior half, but not extending anteriorly to longest soft ray of anal fin; soft dorsal and caudal fins yellow; snout and interorbital largely blackish. Size: maximum length about 20 cm. Distribution: Indo-Pacific, from East Africa to Hawaii and Society Islands. Remarks: inhabits coral reefs at depths of 2-40 m. Occurs singly, in pairs or in small aggregations. Omnivorous.