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Marbled spiny eel (Mastacembelus armatus) — Mastacembelidae

Marbled spiny eel

Mastacembelus armatus
LC · Least Concern

The Marbled spiny eel (Mastacembelus armatus) is a brackish-water fish of the family Mastacembelidae that grows up to 90 cm.

Length
90 cm
Water
Brackish
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
South and Southeast Asia; mountain streams to lowland swamps.
Edibility
Commonly eaten

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Description

The zig-zag eel is a large spiny eel of the family Mastacembelidae from South and Southeast Asia. The species grows to about 90 cm and has an elongate, eel-like body with a pointed, fleshy snout and a handsome brown pattern of wavy, zig-zagging lines, to which the English name refers. It inhabits a variety of waters, from highland streams to lowland wetlands, and often buries itself in sand or mud by day. As a nocturnal predator it hunts insect larvae, worms, small fishes and crustaceans. Along the back is a row of separate, sharp spines before the dorsal fin that can give puncture wounds; handle the fish with care.

Frequently asked questions

How do you recognise the Marbled spiny eel?

The Marbled spiny eel has an elongate, eel-like body, is mainly brown and shows a flame-patterned pattern. Eel-like body with a zigzag pattern; a row of separate, sharp dorsal spines and burrows into sand.

Where does the Marbled spiny eel live?

The Marbled spiny eel lives in brackish water and is mostly found around sand or mud bottom. South and Southeast Asia; mountain streams to lowland swamps.

How big does the Marbled spiny eel get?

The Marbled spiny eel grows to a maximum of about 90 cm.

Is the Marbled spiny eel dangerous to humans?

No, the Marbled spiny eel is harmless to humans. The stout, sharp fin spines can cause painful puncture or cut wounds; handle the fish with care. Clean the wound, let it bleed, and seek medical care if pain or infection increases.

Is the Marbled spiny eel edible?

Yes, the Marbled spiny eel is commonly eaten.

More photos

Marbled spiny eel (Mastacembelus armatus) — Mastacembelidae — 2
Wikimedia Commons — Agong1 (CC BY-SA 3.0)
Marbled spiny eel (Mastacembelus armatus) — Mastacembelidae — 3
Wikimedia Commons — Adolsomee (CC BY-SA 3.0)
Marbled spiny eel (Mastacembelus armatus) — Mastacembelidae — 4
Florida Museum of Natural History Ichthyology (CC BY-NC 4.0) via GBIF — UF
Marbled spiny eel (Mastacembelus armatus) — Mastacembelidae — 5
iNaturalist ((c) bzurings, some rights reserved (CC BY-NC))
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All data

Identification

English name
Marbled spiny eel verified
Scientific name
Mastacembelus armatus
Family
Mastacembelidae
Other names
Spiny eel; Tiretrack eel; Tire-track spinyeel; Zig-zag eel; Zigzag eel verified

Appearance

Size class
Extra large verified
Max length (cm)
90.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Flame-patterned inferred
Tail shape
Rounded 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
Brackish sourced
Substrate
Sand / mud bottom sourced
Natural range
South and Southeast Asia; mountain streams to lowland swamps. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Insect larvae, worms, small fishes and crustaceans sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Eel-like body with a zigzag pattern; a row of separate, sharp dorsal spines and burrows into sand. 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
Harmless sourced
First aid
The stout, sharp fin spines can cause painful puncture or cut wounds; handle the fish with care. Clean the wound, let it bleed, and seek medical care if pain or infection increases. sourced

Status & sources

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

Same genus Mastacembelus

More from the family Mastacembelidae

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