Home · Siluridae · Boal
Boal (Wallago attu) — Siluridae

Boal

Wallago attu
Family: Siluridae
VU · Vulnerable

The Boal (Wallago attu) is a brackish-water fish of the family Siluridae that grows up to 240 cm.

Length
240 cm
Water
Brackish
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Can cause injury
Edibility
Commonly eaten

Description

The wallago catfish is a large freshwater catfish (Siluridae) from South and Southeast Asia. The species has an elongate, scaleless body with a very wide, widely distensible mouth full of sharp teeth, two pairs of barbels and a long anal fin. It inhabits large rivers, lakes and reservoirs. It is a voracious, mainly fish-eating predator. Owing to fishing pressure it is considered vulnerable. It is not venomous, but can give a serious bite wound with its powerful, toothed mouth.

Frequently asked questions

How do you recognise the Boal?

The Boal has an elongate, eel-like body, is mainly silver-grey and shows a plain pattern.

Where does the Boal live?

The Boal lives in brackish water and is mostly found around sand or mud bottom.

How big does the Boal get?

The Boal grows to a maximum of about 240 cm. On average the species is around 75 cm.

Is the Boal dangerous to humans?

The Boal can cause injury; handle it with care.

Is the Boal edible?

Yes, the Boal is commonly eaten.

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →

All data

Identification

Dutch name
Aziatische roofmeerval sourced
English name
Boal verified
Scientific name
Wallago attu
Family
Siluridae
Other names
Freshwater shark; Giant sheatfish; Shark catfish; Wallago verified

Appearance

Size class
Extra large verified
Max length (cm)
240.0 verified
Average length (cm)
75.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
Yes sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Sand / mud bottom sourced
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bodemvissen met natuurlijk aas (worm, garnaal of vis) op of vlak boven de bodem. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Can cause injury sourced

Status & sources

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

More from the family Siluridae

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →