Brook Floater vs rough top shell

Alasmidonta varicosa compared with Jujubinus exasperatus

Key Differences

• Brook Floater is Vulnerable while rough top shell is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater	rough top shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Bivalvia (Bivalvia)	Gastropoda (Gastropoda)
Order	Unionida (Unionida)	Trochida (Trochida)
Family	Unionidae	Trochidae
Genus	Alasmidonta	Jujubinus
Species	Alasmidonta varicosa	Jujubinus exasperatus

Evolutionary Relationship

Brook Floater and rough top shell share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

Brook Floater

VU — Vulnerable

rough top shell

NE — Not Evaluated

Physical Characteristics

Attribute	Brook Floater	rough top 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.

rough top shell

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found across Asia (Turkey) and Europe (7 countries).

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.