Black arion vs Brook Floater

Arion ater compared with Alasmidonta varicosa

Key Differences

• Black arion is Not Evaluated while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	Black arion	Brook Floater
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Gastropoda (Gastropoda)	Bivalvia (Bivalvia)
Order	Stylommatophora (Stylommatophora)	Unionida (Unionida)
Family	Arionidae	Unionidae
Genus	Arion	Alasmidonta
Species	Arion ater	Alasmidonta varicosa

Evolutionary Relationship

Black arion and Brook Floater share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

Black arion

NE — Not Evaluated

Brook Floater

VU — Vulnerable

Physical Characteristics

Attribute	Black arion	Brook Floater
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black arion

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Denmark, Norway, Sweden, and United States.

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.

Black arion

The Black arion (Arion ater) is a species in the genus Arion. Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States