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Rhinecanthus rectangulus (Bloch & Schneider, 1801)
size of specimen: 15 centimeters (6 inches)

Triggerfish discourage predators by erecting two sharp dorsal spines: a large, thick one and a shorter spine behind it. The second spine is the "trigger"; it locks the first one in place.

Visit the Encyclopedia of Life collection to learn more about Wedge-tail triggerfish and other species featured in this exhibit.