Brown Surgeonfish
Acanthurus nigrofuscus
Adult brown surgeonfish inhabit tropical reefs, lagoons, and exposed rocky shallows across the Indo-Pacific. They spend much of the day grazing filamentous algae from rocks and coral rubble. A sharp, retractable spine on each side of the tail base provides a formidable defensive slash when threatened.
- Type
- Water
- Conservation status
- LC
Growth chain
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- Brown Surgeonfish