Squarenose Unicornfish
NameSquarenose Unicornfish
Scientific NameNaso unicornis
Common NamesSquarenose Unicornfish, Bluespine Unicornfish, Unicorn Tang
FamilyAcanthuridae
OriginIndo-Pacific, Red Sea, East Africa, Hawaii, Japan, Australia
Temperamentsemi-aggressive
Dietherbivore
Care Leveladvanced
Minimum Tank Size (Gallons)250
Max Size (Inches)27
Water TypeSaltwater
Temperature Range (°F)72-78
pH Range8.1-8.4
Compatible SpeciesLarge Angelfish, Puffers, Triggerfish (with caution), Large Wrasses, Groupers (if tank size permits), Other robust, non-tang species
Description
The Squarenose Unicornfish, also known as the Bluespine Unicornfish, is a large and striking surgeonfish characterized by a prominent bony "horn" that extends from its forehead. Found in the Indo-Pacific, this herbivorous species primarily grazes on benthic algae on coral reefs. Due to its significant adult size and active swimming nature, it requires a very large aquarium.
