Brook Floater vs Cupped Ear

Alasmidonta varicosa compared with Otidea cantharella

Key Differences

• Brook Floater is Vulnerable while Cupped Ear is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Cupped Ear
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Ascomycota (Sac Fungi)
Class	Bivalvia (Bivalvia)	Pezizomycetes (Pezizomycetes)
Order	Unionida (Unionida)	Pezizales (Pezizales)
Family	Unionidae	Otideaceae
Genus	Alasmidonta	Otidea
Species	Alasmidonta varicosa	Otidea cantharella

Conservation Status

Brook Floater

VU — Vulnerable

Cupped Ear

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Cupped Ear
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.

Cupped Ear

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.