Brook Floater vs Spindle Shank

Alasmidonta varicosa compared with Gymnopus fusipes

Key Differences

• Brook Floater is Vulnerable while Spindle Shank is Near Threatened.

Taxonomic Classification

Rank	Brook Floater	Spindle Shank
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Basidiomycota (Club Fungi)
Class	Bivalvia (Bivalvia)	Agaricomycetes (Mushrooms)
Order	Unionida (Unionida)	Agaricales (Gilled Mushrooms)
Family	Unionidae	Omphalotaceae
Genus	Alasmidonta	Gymnopus
Species	Alasmidonta varicosa	Gymnopus fusipes

Conservation Status

Brook Floater

VU — Vulnerable

Spindle Shank

NT — Near Threatened

Physical Characteristics

Attribute	Brook Floater	Spindle Shank
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.

Spindle Shank

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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