Brook Floater vs truncate barrel-bubble

Alasmidonta varicosa compared with Retusa truncatula

Key Differences

• Brook Floater is Vulnerable while truncate barrel-bubble is Least Concern.

Taxonomic Classification

Rank	Brook Floater	truncate barrel-bubble
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Bivalvia (Bivalvia)	Gastropoda (Gastropoda)
Order	Unionida (Unionida)	Cephalaspidea (Cephalaspidea)
Family	Unionidae	Retusidae
Genus	Alasmidonta	Retusa
Species	Alasmidonta varicosa	Retusa truncatula

Evolutionary Relationship

Brook Floater and truncate barrel-bubble share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

Brook Floater

VU — Vulnerable

truncate barrel-bubble

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	truncate barrel-bubble
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.

truncate barrel-bubble

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Portugal, 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.