Home · Acanthuridae · Doubleband surgeonfish
Doubleband surgeonfish (Acanthurus tennentii) — Acanthuridae

Doubleband surgeonfish

Acanthurus tennentii
Family: Acanthuridae

The Doubleband surgeonfish (Acanthurus tennentii) is a saltwater fish of the family Acanthuridae that grows up to 31 cm.

Length
31 cm
Water
Saltwater
Depth
1.0–40.0 m
Diet
Herbivore
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Can cause injury
Range
Africa: Myanmar, Sri Lanka, Comoros, Bassas da India, India, Indonesia and others
Edibility
Commonly eaten

Want the complete picture on the Doubleband surgeonfish?

Get the app

Description

The doubleband surgeonfish is a surgeonfish (Acanthuridae) from the Indian Ocean. The species grows to about 31 cm and has an olive-brown, disc-shaped body with two conspicuous, sickle-shaped black bands behind the head and a blue margin along the tail spine. As a reef-dweller it grazes algae from coral and rocky reefs. A sharp, scalpel-like spine sits on each side of the tail base that can inflict a deep cut; handle with care.

Frequently asked questions

How do you recognise the Doubleband surgeonfish?

The Doubleband surgeonfish has a flattened, disc-shaped body and is mainly brown. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with care or avoid in risk areas.

Where does the Doubleband surgeonfish live?

The Doubleband surgeonfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Africa: Myanmar, Sri Lanka, Comoros, Bassas da India, India, Indonesia and others

How big does the Doubleband surgeonfish get?

The Doubleband surgeonfish grows to a maximum of about 31 cm. On average the species is around 25 cm.

Is the Doubleband surgeonfish dangerous to humans?

The Doubleband surgeonfish can cause injury; handle it with care. Never grab a live surgeonfish by the tail; a sharp, scalpel-like spine sits on each side of the tail base. For a cut: rinse with clean water, apply pressure to stop bleeding and cover with a sterile dressing. Deep wounds easily become infected: have them assessed medically and check tetanus status.

Is the Doubleband surgeonfish edible?

Yes, the Doubleband surgeonfish is commonly eaten.

More photos

Doubleband surgeonfish (Acanthurus tennentii) — Acanthuridae — 2
Wikimedia Commons — zsispeo (CC BY-SA 3.0)
Doubleband surgeonfish (Acanthurus tennentii) — Acanthuridae — 3
Dev Simpkins (CC BY-NC 4.0) via GBIF — iNaturalist
Doubleband surgeonfish (Acanthurus tennentii) — Acanthuridae — 4
iNaturalist ((c) Nikolai Vladimirov, some rights reserved (CC BY-NC))
Doubleband surgeonfish (Acanthurus tennentii) — Acanthuridae — 5
Wikimedia Commons — Rainer Kretzberg (CC BY 3.0)
Fin

Want the complete picture on the Doubleband surgeonfish?

Point your camera at the fish and Fin names the species in seconds. Free, and the Doubleband surgeonfish is one of 12,519 species in the app.

Get the app →

All data

Identification

English name
Doubleband surgeonfish sourced
Scientific name
Acanthurus tennentii
Family
Acanthuridae
Other names
Doubleband surgeonfish; Leutenant surgeonfish; Lieutenant surgeon; Lieutenant surgeonfish; Surgeonfish verified

Appearance

Size class
Medium verified
Max length (cm)
31.0 verified
Average length (cm)
25.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Brown sourced
Tail shape
Crescent (lunate) inferred

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
1.0 verified
Max depth (m)
40.0 verified
Natural range
Africa: Myanmar, Sri Lanka, Comoros, Bassas da India, India, Indonesia and others sourced
Origin
Native inferred

Behaviour & biology

Diet
Herbivore sourced
Diet (detail)
Algae, seaweeds and plant material inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with care or avoid in risk areas. verified

For anglers

Edibility
Commonly eaten inferred
Fishing method
Fishing with natural bait (fish, shrimp, worm) or lures close to reef and rock structures. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Can cause injury verified
First aid
Never grab a live surgeonfish by the tail; a sharp, scalpel-like spine sits on each side of the tail base. For a cut: rinse with clean water, apply pressure to stop bleeding and cover with a sterile dressing. Deep wounds easily become infected: have them assessed medically and check tetanus status. sourced

Status & sources

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

Same genus Acanthurus

More from the family Acanthuridae

Fin

Want the complete picture on the Doubleband surgeonfish?

Point your camera at the fish and Fin names the species in seconds. Free, and the Doubleband surgeonfish is one of 12,519 species in the app.

Get the app →
Is this the Doubleband surgeonfish? Get the app