Atlantic Stream Crayfish vs Big-eared opossum

Austropotamobius pallipes compared with Didelphis aurita

Key Differences

• Atlantic Stream Crayfish is Endangered while Big-eared opossum is Least Concern.

Taxonomic Classification

Rank	Atlantic Stream Crayfish	Big-eared opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Malacostraca (Crustaceans)	Mammalia (Mammals)
Order	Decapoda (Decapoda)	Didelphimorphia (Didelphimorphia)
Family	Astacidae	Didelphidae
Genus	Austropotamobius	Didelphis
Species	Austropotamobius pallipes	Didelphis aurita

Evolutionary Relationship

Atlantic Stream Crayfish and Big-eared opossum share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Atlantic Stream Crayfish

EN — Endangered

Big-eared opossum

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Stream Crayfish	Big-eared opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Big-eared opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Big-eared opossum

The Big-eared opossum (Didelphis aurita) is a species in the genus Didelphis. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.