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  3. Conger

Bony fish · Anguilliformes · Congridae

Conger

Conger conger

Data Deficient

There is not enough information to assess its risk of extinction.

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It is the heaviest eel in the world, with a record of almost 72 kg, and breeds only once in its life: after a long migration into deep water to spawn, it dies shortly afterwards and never returns to the coast.

Weight

2.5 kg – 25 kg

Size

1.5 m – 3 m

Life expectancy

25 years

Diet

Carnivore

Feeds mainly on other animals.

Activity

Nocturnal

Active mainly at night.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Ocean
40countries45parks83dive sites1same family

Fun facts

  • It is the heaviest eel in the world, with a record of almost 72 kg.
  • It breeds only once in its life and dies shortly after spawning.
  • It hunts mainly at night from rocky lairs.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (fish)
Habitat and environment
Rocky and sandy bottoms of the north-eastern Atlantic and the Mediterranean, from Norway to Senegal, from the shore to deep water
Birth weight
Pelagic egg; a transparent ribbon-shaped leptocephalus larva on hatching
Size at birth
A transparent, laterally flattened leptocephalus larva on hatching
Sexual maturity
Male: ~1.2 m long | Female: ~2 m long, reached between 5 and 15 years old
Gestation / incubation
Egg development is not precisely documented (a semelparous deep-water species)
Litter / clutch size
Up to several million eggs per female (an estimated 3-8 million)

Sources consulted: ScienceDirect (Iberian waters age growth study) · Animalia.bio · LearnAboutNature · ResearchGate (Adriatic Sea study, Irish coastal waters study) · A-Z Animals · Animals.net · FishBase

Where to find it

Best time: All year round on rocky bottoms and wrecks of the eastern Atlantic and the Mediterranean, at night, when it leaves its refuges to hunt.

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Where to see it

Parks and dive sites where this species has been documented — showing 20 of 128.

Related species

Other species in the catalogue with the most in common with Conger — same habitat, park, country, tags or family.

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Keep exploring

Based on what we already know about conger.

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This page in other languages: Español · Deutsch · Français · Português · Italiano

The pins mark the parks and dive sites where its presence is documented.

See its range on the interactive map→
CalanquesFrance
Cinque TerreItaly
Alonissos and the Northern SporadesGreece
Wadden Sea National ParkDenmark
Majjistral ParkMalta
Wadden SeaGermany
Port-CrosFrance
Pembrokeshire CoastUnited Kingdom
NorthumberlandUnited Kingdom
Cabrera ArchipelagoSpain
Scapa FlowUnited Kingdom
Zenobia WreckCyprus
Medes IslandsSpain
Cap de CreusSpain
El Hierro / La RestingaSpain
Museo Atlántico (Lanzarote)Spain
Zakynthos (loggerhead turtle)Greece
Kastellorizo (Blue Cave)Greece
Malta (Blue Hole Gozo / Um El Faroud)Malta
Tavolara (Sardinia)Italy
See all 45 parks
See all 83 dive sites
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Vulnerable

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Common Thresher SharkVulnerable

Common Thresher Shark

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Blue SharkNear Threatened

Blue Shark

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Vulnerable

Greenland Shark

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CountriesItaly
ParksCalanquesFrance
TagsCarnivore
Carnivore
Nocturnal
Solitary
Fish
Ocean

Europe28

Africa7

Asia5

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Spain
Greece
United Kingdom
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