This species is characterized by the following: body depth 1.8 (in subadults) - 2.6 (adults) in SL; presence of a tapering body horn in adults projecting anteriorly at level of eye but not extending in front of mouth (horn first as a bump on forehead at a length of about 12 cm); dorsal profile from snout to horn straight, angle of about 45°; 2 peduncular plates with well-developed forward-curving knife-like spines; emarginate caudal fin when young, truncate with filamentous lobes in adult; olivaceous with blue peduncular plates and spines; dorsal and anal fins yellowish with narrow blue stripes (Ref. 27362).
- Randall, J.E., G.R. Allen and R.C. Steene 1997 Fishes of the Great Barrier Reef and Coral Sea. Second Edition. Revised and expanded edition. Crawford House Publishing Pty Ltd. Bathurst, NSW, Australia. 557 p. (Ref. 27362) http://www.fishbase.org/references/FBRefSummary.php?id=27362&speccode=12900
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