Brook Floater vs Pale Twist

Alasmidonta varicosa compared with Clepsis rurinana

Key Differences

• Brook Floater is Vulnerable while Pale Twist is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Pale Twist
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Lepidoptera (Butterflies & Moths)
Family	Unionidae	Tortricidae
Genus	Alasmidonta	Clepsis
Species	Alasmidonta varicosa	Clepsis rurinana

Evolutionary Relationship

Brook Floater and Pale Twist share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Pale Twist

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Pale Twist
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.

Pale Twist

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, 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.