Brook Floater vs Narrow-headed Vole

Alasmidonta varicosa compared with Microtus gregalis

Key Differences

Brook Floater is Vulnerable while Narrow-headed Vole is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Narrow-headed Vole
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Mammalia (Mammals)
Order	Unionida (Unionida)	Rodentia (Rodents)
Family	Unionidae	Cricetidae
Genus	Alasmidonta	Microtus
Species	Alasmidonta varicosa	Microtus gregalis

Evolutionary Relationship

Brook Floater and Narrow-headed Vole share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

Brook Floater

VU — Vulnerable

Narrow-headed Vole

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Narrow-headed Vole
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic 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.

Narrow-headed Vole

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.