Brook Floater vs

Alasmidonta varicosa compared with Sphingopyxis granuli

Key Differences

• Brook Floater is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater
Kingdom	Animalia (Animals)	Bacteria (Bacteria)
Phylum	Mollusca (Mollusks)	Proteobacteria (Proteobacteria)
Class	Bivalvia (Bivalvia)	Alphaproteobacteria (Alphaproteobacteria)
Order	Unionida (Unionida)	Sphingomonadales (Sphingomonadales)
Family	Unionidae	Sphingomonadaceae
Genus	Alasmidonta	Sphingopyxis
Species	Alasmidonta varicosa	Sphingopyxis granuli

Conservation Status

Brook Floater

VU — Vulnerable

NE — Not Evaluated

Physical Characteristics

Attribute	Brook Floater
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.

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

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.

Sphingopyxis granuli is a Gram-negative alphaproteobacterium in the family Sphingomonadaceae, characterized by its yellow-pigmented colonies and the presence of sphingolipids in its membrane—a trait shared across the family. It was isolated from granule-associated material and is aerobic, rod-shaped, and motile. Sphingopyxis species are common in soils, freshwater, and plant-associated environments.