Brook Floater vs

Alasmidonta varicosa compared with Nitzschia angularis

Key Differences

• Brook Floater is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater
Kingdom	Animalia (Tier)	Chromista (Chromista)
Phylum	Mollusca (Weichtiere)	Ochrophyta (Ochrophyta)
Class	Bivalvia (Muscheln)	Bacillariophyceae (Bacillariophyceae)
Order	Unionida (Unionida)	Bacillariales (Bacillariales)
Family	Unionidae	Bacillariaceae
Genus	Alasmidonta	Nitzschia
Species	Alasmidonta varicosa	Nitzschia angularis

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 and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Norway, Sweden, and 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.

Nitzschia angularis is an elongated, pennate freshwater diatom with angular poles and a distinctive raphe positioned along the keel of the frustule. It inhabits eutrophic to mesotrophic freshwater environments including rivers, ponds, and nutrient-enriched lakes. This photosynthetic diatom is associated with moderately enriched freshwater conditions.