Arctic Blue vs Atlantic Stream Crayfish

Agriades aquilo compared with Austropotamobius pallipes

Key Differences

• Arctic Blue is Near Threatened while Atlantic Stream Crayfish is Endangered.

Taxonomic Classification

Rank	Arctic Blue	Atlantic Stream Crayfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class	Insecta (Insects)	Malacostraca (Crustaceans)
Order	Lepidoptera (Butterflies & Moths)	Decapoda (Decapoda)
Family	Lycaenidae	Astacidae
Genus	Agriades	Austropotamobius
Species	Agriades aquilo	Austropotamobius pallipes

Evolutionary Relationship

Arctic Blue and Atlantic Stream Crayfish share a common ancestor at the Phylum level: Arthropoda. (Arthropods)

Conservation Status

Arctic Blue

NT — Near Threatened

Atlantic Stream Crayfish

EN — Endangered

Physical Characteristics

Attribute	Arctic Blue	Atlantic Stream Crayfish
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic Blue

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Finland, Norway, Russia, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Atlantic Stream Crayfish

Habitat

Inhabits temperate broadleaf and mixed forests and temperate coniferous forests within the Palearctic biogeographic realm.

Range

Distributed across Ireland and United Kingdom. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Arctic Blue

The Arctic Blue (Agriades aquilo) is a species in the genus Agriades. It is currently classified as Near Threatened on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Atlantic Stream Crayfish

The Atlantic Stream Crayfish (Austropotamobius pallipes) is a species in the genus Austropotamobius. It is currently classified as Endangered on the IUCN Red List. Inhabits temperate broadleaf and mixed forests and temperate coniferous forests within the Palearctic biogeographic realm.