Onespine Unicornfish
NameOnespine Unicornfish
Scientific NameNaso thynnoides
Common NamesOnespine Unicornfish, One-spine Unicornfish, Thynnoid Unicornfish, Smallfin Unicornfish
FamilyAcanthuridae
OriginIndo-Pacific, East Africa, Samoa, Southern Japan, New Caledonia
Temperamentcommunity
Dietherbivore
Care Levelintermediate
Minimum Tank Size (Gallons)180
Max Size (Inches)16
Water TypeSaltwater
Temperature Range (°F)72-78
pH Range8.1-8.4
Compatible SpeciesLarge Angelfish, Wrasses, Puffers, Triggerfish (non-aggressive types), Groupers, Other Tangs (in very large tanks), Hawkfish
Description
The Onespine Unicornfish is a large, peaceful herbivore from the Indo-Pacific, characterized by its elongated body and a single bony projection (horn) on its forehead, which becomes more prominent with age. It requires a spacious saltwater aquarium with plenty of swimming room and a diet rich in marine algae to thrive. While generally peaceful, it can be territorial towards conspecifics or similar-looking fish.
