Atlantic Stream Crayfish vs Brook Floater

Austropotamobius pallipes compared with Alasmidonta varicosa

Key Differences

• Atlantic Stream Crayfish is Endangered while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	Atlantic Stream Crayfish	Brook Floater
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Mollusca (Mollusks)
Class	Malacostraca (Crustaceans)	Bivalvia (Bivalvia)
Order	Decapoda (Decapoda)	Unionida (Unionida)
Family	Astacidae	Unionidae
Genus	Austropotamobius	Alasmidonta
Species	Austropotamobius pallipes	Alasmidonta varicosa

Evolutionary Relationship

Atlantic Stream Crayfish and Brook Floater share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Atlantic Stream Crayfish

EN — Endangered

Brook Floater

VU — Vulnerable

Physical Characteristics

Attribute	Atlantic Stream Crayfish	Brook Floater
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.

Brook Floater

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.