Prionurus laticlavius reaches 35 cm. Surgeon (Acanthuridae) Indo-Pacific tropical, abundant Galapagos & East Pacific. Gray-blue dorsal, white-yellow ventral, distinctive black stripe on dorsal edge (profile). Algal herbivore. Schooling on rocky & coral reefs 2-30 m. Venomous lateral spine. Highly observed, few threats = LC. Essential algal regulation for reef health.
