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Catfish (Notarius grandicassis) — Ariidae

Catfish

Notarius grandicassis
Family: Ariidae
LC · Least Concern

The Catfish (Notarius grandicassis) is a brackish-water fish of the family Ariidae that grows up to 63 cm.

Length
63 cm
Water
Brackish
Depth
1.0–20.0 m
Diet
Carnivore
Behaviour
Small groups
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Can cause injury
Edibility
Rarely eaten

Description

The Thomas sea catfish (Notarius grandicassis) is a sea catfish of the family Ariidae from coastal waters of eastern South America. The species has an elongate body with a broad, bony armoured head shield and barbels, and reaches about 63 cm. It lives on muddy bottoms of shallow brackish water and also in the sea. Reproduction occurs around May and June; the female lays 20 to 30 very large eggs (10-12 mm), glued together in mucus, which the male broods in its mouth. The dorsal and pectoral fins bear a serrated, venomous spine that can cause painful puncture wounds. The species is of limited local fishery importance.

Frequently asked questions

How do you recognise the Catfish?

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

Where does the Catfish live?

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

How big does the Catfish get?

The Catfish grows to a maximum of about 63 cm. On average the species is around 40 cm.

Is the Catfish dangerous to humans?

The Catfish can cause injury; handle it with care.

Is the Catfish edible?

The Catfish is rarely eaten.

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All data

Identification

Dutch name
Thomas-zeemeerval sourced
English name
Catfish verified
Scientific name
Notarius grandicassis
Family
Ariidae
Other names
Catfish; Marine catfish; Thomas sea catfish verified

Appearance

Size class
Large verified
Max length (cm)
63.0 verified
Average length (cm)
40.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
Yes sourced
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
1.0 verified
Max depth (m)
20.0 verified
Origin
Native sourced

Behaviour & biology

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

For anglers

Edibility
Rarely 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

Same genus Notarius

More from the family Ariidae

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