Brook Floater vs Scotch Pearl

Alasmidonta varicosa compared with Udea decrepitalis

Key Differences

• Brook Floater is Vulnerable while Scotch Pearl is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Scotch Pearl
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Lepidoptera (Butterflies & Moths)
Family	Unionidae	Crambidae
Genus	Alasmidonta	Udea
Species	Alasmidonta varicosa	Udea decrepitalis

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Scotch Pearl

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Scotch Pearl
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.

Scotch Pearl

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Norway and Sweden.

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.