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Humpnose unicornfish (Naso tuberosus) — Acanthuridae

Humpnose unicornfish

Naso tuberosus
Family: Acanthuridae

The Humpnose unicornfish (Naso tuberosus) is a brackish-water fish of the family Acanthuridae that grows up to 60 cm.

Length
60 cm
Water
Brackish
Diet
Herbivore
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Can cause injury

Description

The humpnose unicornfish is a surgeonfish (Acanthuridae) from the Indo-West Pacific. The species grows to about 60 cm and has a deep, grey-brown body with a conspicuous fleshy bump on the snout in adults. On the tail base it carries two pairs of sharp, scalpel-like bony keels. As a reef-dweller it grazes weed and leafy algae from rocky and coral bottoms. The tail keels can cause deep cuts when handled; otherwise the fish is harmless to humans.

Frequently asked questions

How do you recognise the Humpnose unicornfish?

The Humpnose unicornfish has a torpedo-shaped body and is mainly brown.

Where does the Humpnose unicornfish live?

The Humpnose unicornfish lives in brackish water and is mostly found around stony or rocky ground.

How big does the Humpnose unicornfish get?

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

Is the Humpnose unicornfish dangerous to humans?

The Humpnose unicornfish can cause injury; handle it with care.

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All data

Identification

Dutch name
Bultneus-eenhoornvis sourced
English name
Humpnose unicornfish sourced
Scientific name
Naso tuberosus
Family
Acanthuridae
Other names
Humpnose unicornfish verified

Appearance

Size class
Large verified
Max length (cm)
60.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown sourced
Tail shape
Crescent (lunate) inferred

Habitat & distribution

Water type
Brackish sourced
Substrate
Stone or rock sourced
Origin
Native inferred

Behaviour & biology

Diet
Herbivore sourced
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
levensduur_max_jaar
25.0 sourced

For anglers

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
Can cause injury verified

Status & sources

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

Same genus Naso

More from the family Acanthuridae

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