Brook Floater vs lesser grison

Alasmidonta varicosa compared with Galictis cuja

Key Differences

• Brook Floater is Vulnerable while lesser grison is Least Concern.

Taxonomic Classification

Rank	Brook Floater	lesser grison
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Mammalia (Mammals)
Order	Unionida (Unionida)	Carnivora (Carnivorans)
Family	Unionidae	Mustelidae (Weasels & Otters)
Genus	Alasmidonta	Galictis
Species	Alasmidonta varicosa	Galictis cuja

Evolutionary Relationship

Brook Floater and lesser grison share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

lesser grison

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	lesser grison
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.

lesser grison

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.