Brook Floater vs Opposite Stonewort

Alasmidonta varicosa compared with Chara contraria

Key Differences

Brook Floater is Vulnerable while Opposite Stonewort is Near Threatened.

Taxonomic Classification

Rank	Brook Floater	Opposite Stonewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Charophyta (Charophyta)
Class	Bivalvia (Bivalvia)	Charophyceae (Charophyceae)
Order	Unionida (Unionida)	Charales (Charales)
Family	Unionidae	Characeae
Genus	Alasmidonta	Chara
Species	Alasmidonta varicosa	Chara contraria

Conservation Status

Brook Floater

VU — Vulnerable

Opposite Stonewort

NT — Near Threatened

Physical Characteristics

Attribute	Brook Floater	Opposite Stonewort
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.

Opposite Stonewort

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.