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Australian sawtail (Prionurus microlepidotus) — Acanthuridae

Australian sawtail

Prionurus microlepidotus
Family: Acanthuridae

The Australian sawtail (Prionurus microlepidotus) is a brackish-water fish of the family Acanthuridae that grows up to 70 cm.

Length
70 cm
Water
Brackish
Diet
Herbivore
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Can cause injury
Range
Oceania: Australia, Japan, Norfolk I., Lord Howe I.
Edibility
Commonly eaten

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Description

The Australian sawtail is a sawtail surgeonfish (Acanthuridae) from coastal waters of eastern Australia. The species grows to about 70 cm and has a deep, grey body. The grey body bears fine dark wavy lines and a row of keel-plates before the tail. On each side of the tail base sits a row of sharp, fixed bony keel-plates that can inflict a cut; handle with care. As a reef-dweller it grazes algae.

Frequently asked questions

How do you recognise the Australian sawtail?

The Australian sawtail has a torpedo-shaped body and is mainly silver-grey. Bears sharp spines, plates or strong jaws that can cause cuts or puncture wounds; handle with care.

Where does the Australian sawtail live?

The Australian sawtail lives in brackish water and is mostly found around stony or rocky ground. Oceania: Australia, Japan, Norfolk I., Lord Howe I.

How big does the Australian sawtail get?

The Australian sawtail grows to a maximum of about 70 cm.

Is the Australian sawtail dangerous to humans?

The Australian sawtail can cause injury; handle it with care. Never grab a live sawtail surgeonfish by the tail; sharp, fixed bony keel-plates sit 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 Australian sawtail edible?

Yes, the Australian sawtail is commonly eaten.

More photos

Australian sawtail (Prionurus microlepidotus) — Acanthuridae — 2
Wikimedia Commons — Andrew J. Green (CC BY 2.5)
Australian sawtail (Prionurus microlepidotus) — Acanthuridae — 3
iNaturalist ((c) Peter, some rights reserved (CC BY-NC))
Australian sawtail (Prionurus microlepidotus) — Acanthuridae — 4
iNaturalist ((c) Erik Schlögl, some rights reserved (CC BY-NC))
Australian sawtail (Prionurus microlepidotus) — Acanthuridae — 5
Wikimedia Commons — John Turnbull (CC BY-SA 2.0)
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All data

Identification

English name
Australian sawtail sourced
Scientific name
Prionurus microlepidotus
Family
Acanthuridae
Other names
Sawtail; Sawtail surgeonfish; Sixplate sawtail verified

Appearance

Size class
Large verified
Max length (cm)
70.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey sourced
Tail shape
Crescent (lunate) inferred

Habitat & distribution

Water type
Brackish sourced
Substrate
Stone or rock sourced
Natural range
Oceania: Australia, Japan, Norfolk I., Lord Howe I. 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
Bears sharp spines, plates or strong jaws that can cause cuts or puncture wounds; handle with care. inferred

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 sawtail surgeonfish by the tail; sharp, fixed bony keel-plates sit 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 Prionurus

More from the family Acanthuridae

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