Brook Floater vs dark speedwell

Alasmidonta varicosa compared with Veronica opaca

Key Differences

• Brook Floater is Vulnerable while dark speedwell is Critically Endangered.

Taxonomic Classification

Rank	Brook Floater	dark speedwell
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Magnoliophyta (Flowering Plants)
Class	Bivalvia (Bivalvia)	Magnoliopsida (Dicots)
Order	Unionida (Unionida)	Lamiales (Lamiales)
Family	Unionidae	Plantaginaceae
Genus	Alasmidonta	Veronica
Species	Alasmidonta varicosa	Veronica opaca

Conservation Status

Brook Floater

VU — Vulnerable

dark speedwell

CR — Critically Endangered

Physical Characteristics

Attribute	Brook Floater	dark speedwell
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.

dark speedwell

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests, among 5 distinct biome types spanning the Indomalayan and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Asia (Japan) and Europe (13 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.