Brook Floater vs Rufous Minor

Alasmidonta varicosa compared with Oligia versicolor

Key Differences

• Brook Floater is Vulnerable while Rufous Minor is Near Threatened.

Taxonomic Classification

Rank	Brook Floater	Rufous Minor
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Lepidoptera (Butterflies & Moths)
Family	Unionidae	Noctuidae
Genus	Alasmidonta	Oligia
Species	Alasmidonta varicosa	Oligia versicolor

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Rufous Minor

NT — Near Threatened

Physical Characteristics

Attribute	Brook Floater	Rufous Minor
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.

Rufous Minor

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.