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Bristle-toothed surgeonfish (Ctenochaetus striatus) — Acanthuridae

Bristle-toothed surgeonfish

Ctenochaetus striatus
Family: Acanthuridae
LC · Least Concern

The Bristle-toothed surgeonfish (Ctenochaetus striatus) is a saltwater fish of the family Acanthuridae that grows up to 26 cm.

Length
26 cm
Water
Saltwater
Depth
0.0–60.0 m
Diet
Herbivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Range
Indo-Pacific, on reef flats, lagoon and seaward reefs to over 30 m depth.
Edibility
Rarely eaten

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Description

The striated surgeonfish is a surgeonfish (family Acanthuridae) of the Indo-Pacific. The species reaches about 26 cm and has a deep, laterally compressed, brown body with numerous fine longitudinal lines and blue accents. It inhabits reef flats, lagoon and seaward reefs to over 30 m depth and grazes detritus, diatoms and algae from the bottom with a small mouth. On each side of the tail base it bears a sharp, scalpel-like spine with which it defends itself; this can cause cuts. In some areas the flesh can contain ciguatera.

Frequently asked questions

How do you recognise the Bristle-toothed surgeonfish?

The Bristle-toothed surgeonfish has a flattened, disc-shaped body, is mainly brown and shows a horizontal stripes pattern. Sharp, scalpel-like spine on the caudal peduncle; grazes detritus and algae; locally prone to ciguatera.

Where does the Bristle-toothed surgeonfish live?

The Bristle-toothed surgeonfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-Pacific, on reef flats, lagoon and seaward reefs to over 30 m depth.

How big does the Bristle-toothed surgeonfish get?

The Bristle-toothed surgeonfish grows to a maximum of about 26 cm. On average the species is around 18 cm.

Is the Bristle-toothed surgeonfish dangerous to humans?

The Bristle-toothed surgeonfish is venomous — handle spines with care and seek medical help after a sting if needed. Beware the sharp spine(s) at the tail base, which can cause cuts; clean the wound. The flesh can carry ciguatera in some areas, so do not eat large reef specimens from risk areas.

Is the Bristle-toothed surgeonfish edible?

The Bristle-toothed surgeonfish is rarely eaten.

More photos

Bristle-toothed surgeonfish (Ctenochaetus striatus) — Acanthuridae — 2
Wikimedia Commons — Izuzuki (CC BY-SA 3.0)
Bristle-toothed surgeonfish (Ctenochaetus striatus) — Acanthuridae — 3
iNaturalist ((c) François Libert, some rights reserved (CC BY-NC-SA))
Bristle-toothed surgeonfish (Ctenochaetus striatus) — Acanthuridae — 4
Wikimedia Commons — Derek Keats (CC BY 2.0)
Bristle-toothed surgeonfish (Ctenochaetus striatus) — Acanthuridae — 5
Wikimedia Commons — Philippe Boujon (CC BY-SA 3.0)
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All data

Identification

English name
Bristle-toothed surgeonfish verified
Scientific name
Ctenochaetus striatus
Family
Acanthuridae
Other names
Fine-lined bristletooth; Lined bristletooth; Striated surgeonfish; Striped bristletooth; Surgeonfish; Striped bristle-tooth; Orange-dotted bristletooth verified

Appearance

Size class
Medium verified
Max length (cm)
26.0 verified
Average length (cm)
18.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Brown inferred
Pattern
Horizontal stripes 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)
0.0 verified
Max depth (m)
60.0 verified
Natural range
Indo-Pacific, on reef flats, lagoon and seaward reefs to over 30 m depth. inferred
Origin
Native sourced

Behaviour & biology

Diet
Herbivore sourced
Diet (detail)
Detritus, diatoms and algae from the bottom sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
levensduur_max_jaar
36.0 verified
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Sharp, scalpel-like spine on the caudal peduncle; grazes detritus and algae; locally prone to ciguatera. sourced

For anglers

Edibility
Rarely eaten sourced
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
Venomous / poisonous sourced
First aid
Beware the sharp spine(s) at the tail base, which can cause cuts; clean the wound. The flesh can carry ciguatera in some areas, so do not eat large reef specimens from risk areas. 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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