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Bristletoothed surgeonfish (Ctenochaetus strigosus) — Acanthuridae

Bristletoothed surgeonfish

Ctenochaetus strigosus
Family: Acanthuridae
LC · Least Concern

The Bristletoothed surgeonfish (Ctenochaetus strigosus) is a saltwater fish of the family Acanthuridae that grows up to 15 cm.

Length
15 cm
Water
Saltwater
Depth
1.0–113.0 m
Diet
Herbivore
Behaviour
Solitary
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Range
Central Pacific, mainly around Hawaii; coral, rock and rubble bottoms.
Edibility
Rarely eaten

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Description

The spotted surgeonfish is a surgeonfish (Acanthuridae) from the central Pacific, especially around Hawaii. The species has an oval, dark-brown body with fine light spots and a conspicuous gold ring around the eye, to which the name refers. It lives solitarily and by day over coral, rock and rubble. With its bristle-like teeth it wipes detritus, diatoms and algal film from the substrate. On either side of the tail base it bears a sharp scalpel spine that can cause deep cuts; handle a caught specimen with care.

Frequently asked questions

How do you recognise the Bristletoothed surgeonfish?

The Bristletoothed surgeonfish has a flattened, disc-shaped body, is mainly brown and shows a spots pattern. Golden eye ring and brush-like teeth for sweeping up detritus; sharp scalpel spine at the tail base. 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 Bristletoothed surgeonfish live?

The Bristletoothed surgeonfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Central Pacific, mainly around Hawaii; coral, rock and rubble bottoms.

How big does the Bristletoothed surgeonfish get?

The Bristletoothed surgeonfish grows to a maximum of about 15 cm.

Is the Bristletoothed surgeonfish dangerous to humans?

The Bristletoothed surgeonfish is venomous — handle spines with care and seek medical help after a sting if needed. The sharp, scalpel-like spine(s) at the tail base can cause deep cuts. Clean the wound thoroughly and seek medical care for a deep cut or infection.

Is the Bristletoothed surgeonfish edible?

The Bristletoothed surgeonfish is rarely eaten.

More photos

Bristletoothed surgeonfish (Ctenochaetus strigosus) — Acanthuridae — 2
iNaturalist ((c) David R, some rights reserved (CC BY-NC))
Bristletoothed surgeonfish (Ctenochaetus strigosus) — Acanthuridae — 3
Wikimedia Commons — Dr. Dwayne Meadows, NOAA/NMFS/OPR (Public domain)
Bristletoothed surgeonfish (Ctenochaetus strigosus) — Acanthuridae — 4
Wikimedia Commons — Steve Ryan (CC BY-SA 2.0)
Bristletoothed surgeonfish (Ctenochaetus strigosus) — Acanthuridae — 5
iNaturalist ((c) David R, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Bristletoothed surgeonfish verified
Scientific name
Ctenochaetus strigosus
Family
Acanthuridae
Other names
Goldring bristletooth; Goldring surgeonfish; Slender-toothed surgeonfish; Spotted bristletooth; Spotted surgeonfish; Spotted bristletooth surgeonfish; Surgeonfish; Yelloweye surgeonfish; Yellow-eyed surgeonfish verified

Appearance

Size class
Small verified
Max length (cm)
15.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Brown inferred
Pattern
Spots inferred
Tail shape
Crescent (lunate) inferred
Mouth position
Inferior (downward) 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)
1.0 verified
Max depth (m)
113.0 verified
Natural range
Central Pacific, mainly around Hawaii; coral, rock and rubble bottoms. inferred
Origin
Native sourced

Behaviour & biology

Diet
Herbivore sourced
Diet (detail)
Detritus, diatoms and algal film sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Golden eye ring and brush-like teeth for sweeping up detritus; sharp scalpel spine at the tail base. 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
Rarely eaten sourced
Fishing method
Small in size and barely an angling target; mostly caught incidentally or as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous sourced
First aid
The sharp, scalpel-like spine(s) at the tail base can cause deep cuts. Clean the wound thoroughly and seek medical care for a deep cut or infection. sourced

Status & sources

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

Same genus Ctenochaetus

More from the family Acanthuridae

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