Brook Floater vs Fir Disco

Alasmidonta varicosa compared with Pithya vulgaris

Key Differences

• Brook Floater is Vulnerable while Fir Disco is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater	Fir Disco
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Ascomycota (Sac Fungi)
Class	Bivalvia (Bivalvia)	Pezizomycetes (Pezizomycetes)
Order	Unionida (Unionida)	Pezizales (Pezizales)
Family	Unionidae	Sarcoscyphaceae
Genus	Alasmidonta	Pithya
Species	Alasmidonta varicosa	Pithya vulgaris

Conservation Status

Brook Floater

VU — Vulnerable

Fir Disco

NE — Not Evaluated

Physical Characteristics

Attribute	Brook Floater	Fir Disco
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.

Fir Disco

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, 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.