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  1. Home
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  3. Noble Crayfish

One of the 22 crabs on WAnimals

Malacostracans · Decapoda · Astacidae

Noble Crayfish

Astacus astacus

Vulnerable

At high risk of extinction in the wild over the medium term.

Spotted something wrong?

It is a keystone species in the fresh waters it inhabits, and in Sweden it is the centre of a centuries-old cultural tradition, the kräftskiva. Its populations have been decimated by a lethal fungus brought in with the American signal crayfish.

Weight

30 g – 500 g

Size

12 cm – 16 cm

Life expectancy

9 years

Diet

Omnivore

Combines animal and plant food depending on availability.

Activity

Nocturnal

Active mainly at night.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Freshwater
14countries89parks2same family

Fun facts

  • regeneraciónIt can regrow a lost claw over several successive moults, though it usually takes more than a year to reach its original size.

Life cycle and biology

Skeleton type
Invertebrate - calcified exoskeleton (crustacean)
Habitat and environment
Unpolluted freshwater rivers, streams and lakes across much of Europe, from France to Scandinavia and Russia
Birth weight
Hatchling 8.5-9 mm in total length
Size at birth
8.5-9 mm in total length on hatching, taking adult form after the third moult (13-15 mm)
Sexual maturity
3-5 years (6-8.5 cm long, depending on the population)
Gestation / incubation
6-8 months of egg development over winter, attached to the female's swimmerets
Litter / clutch size
90 to 500 eggs per clutch (most commonly 100-260)

Sources consulted: Astacology.org (Finnish lake study) · ResearchGate (astacid captivity reproduction study) · Animalia.bio · CABI Compendium · Grokipedia · Crayfish of Romania · Wikipedia (Astacus astacus)

Where to find it

Best time: From May to October, at night, in clean European rivers and streams; in the Iberian Peninsula it is confined to isolated headwaters.

Loading map…

Where to see it

Parks and dive sites where this species has been documented — showing 10 of 89.

Related species

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

Same taxonomic family
Shares a park
Same taxonomic family
Shares a park
Shares a park
Shares a park

How to help

The noble crayfish is classified as vulnerable. Organisations such as the IUCN, WWF and the Wildlife Conservation Society work specifically on its conservation and that of its habitat; looking into their programmes is a good starting point if you want to get involved.

It's documented in 10 protected areas — one reason why protecting these places matters for its conservation.

Keep exploring

Based on what we already know about noble crayfish.

Share an experience, a fun fact or a tip for seeing the noble crayfish.
See full glossary
This page in other languages: Español · Deutsch · Français · Português · Italiano

The pins mark the parks where its presence is documented.

See its range on the interactive map→
SarekSweden
PadjelantaSweden
Pallas-YllastunturiFinland
Urho KekkonenFinland
Swiss National ParkSwitzerland
VanoiseFrance
Hohe TauernAustria
BerchtesgadenGermany
EcrinsFrance
MercantourFrance
See all 89 parks
White-clawed CrayfishEndangered

White-clawed Crayfish

Austropotamobius pallipes

Iberian DesmanVulnerable

Iberian Desman

Galemys pyrenaicus

Least Concern

Signal Crayfish

Pacifastacus leniusculus

TenchLeast Concern

Tench

Tinca tinca

Least Concern

Marbled Newt

Triturus marmoratus

Vulnerable

Southern Water Vole

Arvicola sapidus

CountriesPoland
ParksSarekSweden
TagsOmnivore
Omnivore
Nocturnal
Solitary
Vulnerable
Freshwater
Crustacean

Europe13

Asia1

Poland
Finland
Sweden
Germany
France
Slovakia
Austria
Belgium
Croatia
Czechia
Finland
France
Germany
Luxembourg
Poland
Slovakia
Slovenia
Sweden
Switzerland
Russia