Brook Floater vs sun shell

Alasmidonta varicosa compared with Astraea heliotropium

Key Differences

• Brook Floater is Vulnerable while sun shell is Least Concern.

Taxonomic Classification

Rank	Brook Floater	sun shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Bivalvia (Bivalvia)	Gastropoda (Gastropoda)
Order	Unionida (Unionida)	Trochida (Trochida)
Family	Unionidae	Turbinidae
Genus	Alasmidonta	Astraea
Species	Alasmidonta varicosa	Astraea heliotropium

Evolutionary Relationship

Brook Floater and sun shell share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

Brook Floater

VU — Vulnerable

sun shell

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	sun shell
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.

sun shell

Habitat

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

Range

Found in New Zealand.

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.