Brook Floater vs robust shell

Alasmidonta varicosa compared with Littoraria undulata

Key Differences

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

Taxonomic Classification

Rank	Brook Floater	robust shell
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Mollusca (연체동물)	Mollusca (연체동물)
Class	Bivalvia (이매패류)	Gastropoda (복족강)
Order	Unionida (석패목)	Littorinimorpha (총알고둥류)
Family	Unionidae	Littorinidae
Genus	Alasmidonta	Littoraria
Species	Alasmidonta varicosa	Littoraria undulata

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

robust shell

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	robust 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.

robust shell

Habitat

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

Range

Found in Taiwan.

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.