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Portugese dogfish (Centroscymnus coelolepis) — Somniosidae

Portugese dogfish

Centroscymnus coelolepis
Family: Somniosidae
NT · Near Threatened
NativeIntroduced

The Portugese dogfish (Centroscymnus coelolepis) is a saltwater fish of the family Somniosidae that grows up to 121 cm.

Length
121 cm
Water
Saltwater
Depth
128.0–3700.0 m
Diet
Carnivore
Behaviour
Solitary
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
Worldwide in cold, deep waters; in the eastern Atlantic and the Mediterranean Sea along continental slopes.
Edibility
Rarely eaten

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Description

The Portuguese dogfish is a deep-sea shark of the family Somniosidae reaching about 120 cm. The stout, blackish-brown body has large, greenish glossy eyes and skin with fine, shiny denticles; the two dorsal fins are small. The species is among the deepest-living sharks in the world, recorded to more than 3700 metres, but usually lives between 400 and 2000 metres along continental slopes of the eastern Atlantic and the Mediterranean among other areas. It hunts deep-sea fish, squid and crustaceans. Reproduction is ovoviviparous, very slow and with few young. Because of this vulnerable life history and fishing for its oil-rich liver the species is assessed as Near Threatened.

Frequently asked questions

How do you recognise the Portugese dogfish?

The Portugese dogfish has an elongate, eel-like body, is mainly black and shows a plain pattern. One of the deepest-living sharks in the world; stocky, blackish brown with large green eyes and glossy dermal denticles. Two small dorsal fins.

Where does the Portugese dogfish live?

The Portugese dogfish lives in the sea (marine waters) and is mostly found around sand or mud bottom. Worldwide in cold, deep waters; in the eastern Atlantic and the Mediterranean Sea along continental slopes.

How big does the Portugese dogfish get?

The Portugese dogfish grows to a maximum of about 121 cm. On average the species is around 92 cm.

Is the Portugese dogfish dangerous to humans?

No, the Portugese dogfish is harmless to humans. None required: this species is harmless to humans.

Is the Portugese dogfish edible?

The Portugese dogfish is rarely eaten.

More photos

Portugese dogfish (Centroscymnus coelolepis) — Somniosidae — 2
iNaturalist ((c) jgrimshaw, some rights reserved (CC BY-NC))
Portugese dogfish (Centroscymnus coelolepis) — Somniosidae — 3
iNaturalist ((c) Gonzalo Mucientes Sandoval, some rights reserved (CC BY-NC))
Portugese dogfish (Centroscymnus coelolepis) — Somniosidae — 4
iNaturalist ((c) jgrimshaw, some rights reserved (CC BY-NC))
Portugese dogfish (Centroscymnus coelolepis) — Somniosidae — 5
iNaturalist ((c) Clinton Duffy, some rights reserved (CC BY-NC))
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All data

Identification

English name
Portugese dogfish verified
Scientific name
Centroscymnus coelolepis
Family
Somniosidae
Other names
Portuguese dogfish; Portuguese shark verified

Appearance

Size class
Extra large verified
Max length (cm)
121.0 verified
Average length (cm)
92.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Black sourced
Pattern
Plain sourced
Tail shape
Crescent (lunate) inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
No verified
Dorsal fins
Two separate sourced
Dorsal spines
No verified

Habitat & distribution

Water type
Saltwater sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
128.0 verified
Max depth (m)
3700.0 verified
Natural range
Worldwide in cold, deep waters; in the eastern Atlantic and the Mediterranean Sea along continental slopes. verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Diet (detail)
Worms, crustaceans, molluscs and benthic invertebrates inferred
Social behaviour
Solitary verified
Territorial
No verified
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
Seasonality
Ovoviviparous and very slow-growing with few young; therefore vulnerable to deep-sea fishing. sourced
Special features
One of the deepest-living sharks in the world; stocky, blackish brown with large green eyes and glossy dermal denticles. Two small dorsal fins. sourced

For anglers

Edibility
Rarely eaten verified
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 verified
First aid
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Centroscymnus

More from the family Somniosidae

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