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Cobbler (Cnidoglanis macrocephalus) — Plotosidae

Cobbler

Cnidoglanis macrocephalus
Family: Plotosidae
DD · Data Deficient

The Cobbler (Cnidoglanis macrocephalus) is a brackish-water fish of the family Plotosidae that grows up to 91 cm.

Length
91 cm
Water
Brackish
Depth
1.0–30.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Venomous / poisonous
Range
Around southern Australia; shallow bays and sandy inlets.
Edibility
Commonly eaten

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Description

The estuary catfish is an eeltail catfish (Plotosidae) from the waters around southern Australia. The species has a robust, elongate, scaleless body with a large head, barbels and a continuous fin margin around the tail. It lives inshore in shallow bays and sandy inlets near river mouths. As a bottom hunter it feeds on crustaceans, molluscs, worms and small fishes. The dorsal and pectoral fin spines carry venom; a sting causes intense pain.

Frequently asked questions

How do you recognise the Cobbler?

The Cobbler has an elongate, eel-like body, is mainly brown and shows a marbled pattern. Continuous fin margin around the tail; eeltail catfish of Australian estuaries with venomous fin spines.

Where does the Cobbler live?

The Cobbler lives in brackish water and is mostly found around sand or mud bottom. Around southern Australia; shallow bays and sandy inlets.

How big does the Cobbler get?

The Cobbler grows to a maximum of about 91 cm.

Is the Cobbler dangerous to humans?

The Cobbler is venomous — handle spines with care and seek medical help after a sting if needed. The fin spines carry venom; a sting causes intense, burning pain and swelling. Immerse the wound in hot water (about 45 C) for 30-90 minutes to break down the venom, remove spine fragments and seek medical care.

Is the Cobbler edible?

Yes, the Cobbler is commonly eaten.

More photos

Cobbler (Cnidoglanis macrocephalus) — Plotosidae — 2
Wikimedia Commons — Sylke Rohrlach (CC BY-SA 3.0)
Cobbler (Cnidoglanis macrocephalus) — Plotosidae — 3
iNaturalist ((c) Peter, some rights reserved (CC BY-NC))
Cobbler (Cnidoglanis macrocephalus) — Plotosidae — 4
iNaturalist ((c) Lucy Smiechura, some rights reserved (CC BY-NC))
Cobbler (Cnidoglanis macrocephalus) — Plotosidae — 5
iNaturalist ((c) Phil W, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Cobbler verified
Scientific name
Cnidoglanis macrocephalus
Family
Plotosidae
Other names
Cobbler; Deteira; Estuarine cat-fish; Estuary catfish; Estuary cobbler; South Australian catfish verified

Appearance

Size class
Extra large verified
Max length (cm)
91.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Marbled inferred
Tail shape
Rounded inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
Yes sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
1.0 verified
Max depth (m)
30.0 verified
Natural range
Around southern Australia; shallow bays and sandy inlets. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Crustaceans, molluscs, worms and small fishes sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
levensduur_max_jaar
13.0 verified
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Continuous fin margin around the tail; eeltail catfish of Australian estuaries with venomous fin spines. sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous sourced
First aid
The fin spines carry venom; a sting causes intense, burning pain and swelling. Immerse the wound in hot water (about 45 C) for 30-90 minutes to break down the venom, remove spine fragments and seek medical care. sourced

Status & sources

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

More from the family Plotosidae

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