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Cryptic filefish (Paramonacanthus japonicus) — Monacanthidae

Cryptic filefish

Paramonacanthus japonicus
Family: Monacanthidae
LC · Least Concern

The Cryptic filefish (Paramonacanthus japonicus) is a saltwater fish of the family Monacanthidae that grows up to 12 cm.

Length
12 cm
Water
Saltwater
Depth
34.0–46.0 m
Diet
Omnivore
Behaviour
Small groups
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Harmless
Edibility
Rarely eaten

Description

The hairfinned filefish is a filefish (Monacanthidae) from the northwestern Pacific. The species has a strongly laterally compressed body with a rough, sandpaper-like skin and an erectile first dorsal fin spine that it can lock upright. It inhabits weedy and sandy parts of coastal reefs and open mud bottoms. As an omnivore it picks small bottom invertebrates, algae and detritus. The species is harmless to humans.

Frequently asked questions

How do you recognise the Cryptic filefish?

The Cryptic filefish has a flattened, disc-shaped body, is mainly brown and shows a marbled pattern.

Where does the Cryptic filefish live?

The Cryptic filefish lives in the sea (marine waters) and is mostly found around stony or rocky ground.

How big does the Cryptic filefish get?

The Cryptic filefish grows to a maximum of about 12 cm.

Is the Cryptic filefish dangerous to humans?

No, the Cryptic filefish is harmless to humans.

Is the Cryptic filefish edible?

The Cryptic filefish is rarely eaten.

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All data

Identification

Dutch name
Japanse vijlvis sourced
English name
Cryptic filefish verified
Scientific name
Paramonacanthus japonicus
Family
Monacanthidae
Other names
Filefish; Hairfinned leatherjacket; Hair-finned leatherjacket verified

Appearance

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

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
34.0 verified
Max depth (m)
46.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred

For anglers

Edibility
Rarely eaten sourced
Fishing method
Klein van stuk en nauwelijks een hengelsportdoel; wordt vooral incidenteel of als aasvis gevangen. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

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

Same genus Paramonacanthus

More from the family Monacanthidae

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