Brook Floater vs Polynesian Tree Snail

Alasmidonta varicosa compared with Samoana attenuata

Key Differences

• Brook Floater is Vulnerable while Polynesian Tree Snail is Critically Endangered.

Taxonomic Classification

Rank	Brook Floater	Polynesian Tree Snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Bivalvia (Bivalvia)	Gastropoda (Gastropoda)
Order	Unionida (Unionida)	Stylommatophora (Stylommatophora)
Family	Unionidae	Partulidae
Genus	Alasmidonta	Samoana
Species	Alasmidonta varicosa	Samoana attenuata

Evolutionary Relationship

Brook Floater and Polynesian Tree Snail share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

Brook Floater

VU — Vulnerable

Polynesian Tree Snail

CR — Critically Endangered

Physical Characteristics

Attribute	Brook Floater	Polynesian Tree Snail
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.

Polynesian Tree Snail

Habitat

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

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.