Brook Floater vs elliptic trough shell

Alasmidonta varicosa compared with Spisula elliptica

Key Differences

• Brook Floater is Vulnerable while elliptic trough shell is Least Concern.

Taxonomic Classification

Rank	Brook Floater	elliptic trough shell
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Mollusca (연체동물)	Mollusca (연체동물)
Class same	Bivalvia (이매패류)	Bivalvia (이매패류)
Order	Unionida (석패목)	Venerida (Venerida)
Family	Unionidae	Mactridae
Genus	Alasmidonta	Spisula
Species	Alasmidonta varicosa	Spisula elliptica

Evolutionary Relationship

Brook Floater and elliptic trough shell share a common ancestor at the Class level: Bivalvia. (이매패류)

Conservation Status

Brook Floater

VU — Vulnerable

elliptic trough shell

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	elliptic trough shell
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.

elliptic trough shell

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, 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.