Brook Floater vs Isopod

Alasmidonta varicosa compared with Porcellio dilatatus

Key Differences

• Brook Floater is Vulnerable while Isopod is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater	Isopod
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Malacostraca (Crustaceans)
Order	Unionida (Unionida)	Isopoda (Isopoda)
Family	Unionidae	Porcellionidae
Genus	Alasmidonta	Porcellio
Species	Alasmidonta varicosa	Porcellio dilatatus

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Isopod

NE — Not Evaluated

Physical Characteristics

Attribute	Brook Floater	Isopod
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.

Isopod

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Widely distributed across Europe (7 countries), North America (United States), and South America (Brazil).

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.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States