Brook Floater vs Crab Grass

Alasmidonta varicosa compared with Digitaria siderograpta

Key Differences

• Brook Floater is Vulnerable while Crab Grass is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Crab Grass
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Magnoliophyta (Flowering Plants)
Class	Bivalvia (Bivalvia)	Liliopsida (Monocots)
Order	Unionida (Unionida)	Poales (Grasses)
Family	Unionidae	Poaceae (Grass Family)
Genus	Alasmidonta	Digitaria
Species	Alasmidonta varicosa	Digitaria siderograpta

Conservation Status

Brook Floater

VU — Vulnerable

Crab Grass

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Crab Grass
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.

Crab Grass

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

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.