Saltwater
Oneknife unicornfish
Naso thynnoides
Acanthuridae, Nasinae
Facts
Characteristics
- Length
- Up to 40 cm
- Body shape
- Streamlined
Care
- Group
- Missing
- Smallest aquarium
- 1,464 liters
- Diet
- Missing
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Behavior
Water values
Smallest tank
Range
Native
Lives wild in American Samoa, Australia, China, France, Guam, Indonesia, Japan, Kiribati, and 18 more countries.
More about the species
Description
Generally uncommon species found in steep outer lagoon and seaward reef slopes. Maximum depth reported at 40m Occurs singly or in large schools. Usually seen swimming steadily along upper edges of drop-offs in pursuit of plankton. A semi-pelagic fish that feeds on zooplankton, but remains over or near reefs. Also feeds on algae. It is cleaned by Labroides and sleeps on reefs at night, taking on a disruptive mottled pattern. Caught with nets.
Other names
Other scientific names
- Axinurus thynnoides
- Naso thynoides
In other languages
- Enkeltbladet næsehornsfisk
- Barred unicornfish, Little unicorn, One-spine unicorn, Oneknife unicorn, Onespine unicornfish, Single-spined unicornfish, Singlespine unicornfish, Surgeonfish, Thunny unicornfish, Unicornfish
Articles
All articles
How to add new fish4 min read
From the store to the tank: how to get the fish used to your water, why you should add only a few at a time, and what to watch for in the first few days.
Quarantine for new fish3 min read
Why new fish should live in a tank of their own for a few weeks before they move in, what you need, and what to look for.
From freshwater to saltwater3 min read
What is different in a saltwater aquarium: salt, refractometer, live rock and corals. An introduction for anyone thinking of giving it a try.