Home · Acanthuridae · Brown unicornfish
Brown unicornfish (Naso brevirostris) — Acanthuridae

Brown unicornfish

Naso brevirostris
Family: Acanthuridae
LC · Least Concern

The Brown unicornfish (Naso brevirostris) is a saltwater fish of the family Acanthuridae that grows up to 60 cm.

Length
60 cm
Water
Saltwater
Depth
0.0–122.0 m
Diet
Omnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Edibility
Commonly eaten

Description

The spotted unicornfish is a surgeonfish (Acanthuridae) from the Indo-Pacific. Adults develop a conspicuous horn-like projection on the forehead. The species grows to about 60 cm and has two pairs of sharp, fixed bony keels on the tail base. Adults live in midwater along steep outer reef and lagoon slopes and eat zooplankton; younger fish graze algae from the reef. The sharp tail keels can give a deep cut if handled; otherwise the fish is harmless to humans.

Frequently asked questions

How do you recognise the Brown unicornfish?

The Brown unicornfish has a torpedo-shaped body, is mainly brown and shows a spots pattern.

Where does the Brown unicornfish live?

The Brown unicornfish lives in the sea (marine waters) and is mostly found around stony or rocky ground.

How big does the Brown unicornfish get?

The Brown unicornfish grows to a maximum of about 60 cm.

Is the Brown unicornfish dangerous to humans?

The Brown unicornfish is venomous — handle spines with care and seek medical help after a sting if needed.

Is the Brown unicornfish edible?

Yes, the Brown unicornfish is commonly eaten.

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →

All data

Identification

Dutch name
Kortsnuit-eenhoornvis sourced
English name
Brown unicornfish verified
Scientific name
Naso brevirostris
Family
Acanthuridae
Other names
Brown unicornfish; Lined unicornfish; Longnose surgeonfish; Longnose unicornfish verified

Appearance

Size class
Large verified
Max length (cm)
60.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown inferred
Pattern
Spots inferred
Tail shape
Straight inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
0.0 verified
Max depth (m)
122.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
levensduur_max_jaar
25.0 sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Vissen met natuurlijk aas (vis, garnaal, worm) of kunstaas dicht bij rif- en rotsstructuren. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Naso

More from the family Acanthuridae

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →