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Scrawled filefish (Aluterus scriptus) — Monacanthidae

Scrawled filefish

Aluterus scriptus
Family: Monacanthidae
LC · Least Concern

The Scrawled filefish (Aluterus scriptus) is a saltwater fish of the family Monacanthidae that grows up to 110 cm.

Length
110 cm
Water
Saltwater
Depth
3.0–120.0 m
Diet
Omnivore
Behaviour
Solitary
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Harmless
Range
Widespread in tropical and subtropical seas worldwide, near reefs, wrecks and seagrass beds of coastal water.
Edibility
Rarely eaten

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Description

The scrawled filefish is a large, elongate filefish of the family Monacanthidae (filefishes) reaching about 1.1 metres. The laterally compressed, grey-brown body bears a handsome pattern of blue squiggly lines and black spots - the 'scrawl' from which the species takes its name - and ends in a large, fan-shaped tail. A fold-up dorsal spine stands on the head. The small mouth has strong teeth. The species is widely distributed in tropical and subtropical seas worldwide and lives near reefs, wrecks and seagrass beds. As an omnivore it eats weeds, seagrass, coral polyps, sea anemones and small invertebrates. It swims slowly with fluttering fins and can change colour quickly.

Frequently asked questions

How do you recognise the Scrawled filefish?

The Scrawled filefish has a flattened, disc-shaped body, is mainly brown and shows a spots pattern. Large, elongate filefish with a fan-shaped tail, a small mouth and a pattern of blue wavy lines and black spots. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with caution or avoid in risk areas.

Where does the Scrawled filefish live?

The Scrawled filefish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Widespread in tropical and subtropical seas worldwide, near reefs, wrecks and seagrass beds of coastal water.

How big does the Scrawled filefish get?

The Scrawled filefish grows to a maximum of about 110 cm. On average the species is around 55 cm.

Is the Scrawled filefish dangerous to humans?

No, the Scrawled filefish is harmless to humans. None required: this species is harmless to humans.

Is the Scrawled filefish edible?

The Scrawled filefish is rarely eaten.

More photos

Scrawled filefish (Aluterus scriptus) — Monacanthidae — 2
iNaturalist ((c) pkunnen, some rights reserved (CC BY-NC))
Scrawled filefish (Aluterus scriptus) — Monacanthidae — 3
iNaturalist ((c) mi_fishes, some rights reserved (CC BY-NC))
Scrawled filefish (Aluterus scriptus) — Monacanthidae — 4
iNaturalist ((c) kary, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Scrawled filefish verified
Scientific name
Aluterus scriptus
Family
Monacanthidae
Other names
Broomtail filefish; Figured leather-jacket; Filefish; Scrawled Fiiefish; Scribbled leatherjacket; Scribbled filefish; Scrawled leatherjacket; Broom-tail file; Scrawled tilefish; Scribbled fish; Scribbled leather jacket; Scribbled leatherjacket filefish verified

Appearance

Size class
Extra large verified
Max length (cm)
110.0 verified
Average length (cm)
55.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Brown sourced
Pattern
Spots sourced
Tail shape
Rounded inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No verified
Dorsal fins
Two separate sourced
Dorsal spines
Yes verified

Habitat & distribution

Water type
Saltwater verified
Substrate
Stone or rock verified
Min depth (m)
3.0 verified
Max depth (m)
120.0 verified
Natural range
Widespread in tropical and subtropical seas worldwide, near reefs, wrecks and seagrass beds of coastal water. verified
Origin
Native verified

Behaviour & biology

Diet
Omnivore verified
Diet (detail)
Seaweeds, seagrass, coral polyps, sea anemones and small invertebrates sourced
Social behaviour
Solitary verified
Territorial
No verified
Activity
Diurnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
Seasonality
Resident, slow-swimming reef-dweller; juvenile fish sometimes drift head-down among drifting seaweed. sourced
Special features
Large, elongate filefish with a fan-shaped tail, a small mouth and a pattern of blue wavy lines and black spots. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with caution or avoid in risk areas. verified

For anglers

Edibility
Rarely eaten verified
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
Harmless verified
First aid
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Aluterus

More from the family Monacanthidae

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