Species: Heniochus monoceros, Masked Bannerfish, Masked Coachman

Heniochus monoceros Cuvier, 1831

Masked Bannerfish, Masked Coachman

Body round, strongly compressed; snout projecting in a moderate sized tube, 31-36% head length; adults with a small pointed knob over each eye and a short, pointed bony knob on nape projecting forwards above eye; dorsal fin XII, 24-27, with long filament based on 4th spine, rays longer than posterior spines; anal fin III, 18-19; pectorals 16-17; tail fin truncate; lateral line complete, ends at base of tail fin, 55-61 scales.

Body with white front, yellow-white rear, an indistinct oblique dark bar at rear; face black, a thin white bar between eyes, upper forehead yellow-brown; dark bar on front of body through pectoral and pelvic fins, extends onto dorsal fin behind 4th spine fin-banner; body with rear dark bar relatively indistinct; dorsal fin with white banner, remainder of fin yellow; tail fin yellow; anal fin white at front, yellow behind; pelvics black.

Reaches 25 cm.

Lives on coral reefs, lagoons and seaward reefs.

Depth range 2-45m, usually below 15 m

Indo-central Pacific: introduced to SE Florida