Brook Floater vs grass prawm

Alasmidonta varicosa compared with Palaemon elegans

Key Differences

• Brook Floater is Vulnerable while grass prawm is Least Concern.

Taxonomic Classification

Rank	Brook Floater	grass prawm
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Malacostraca (Crustaceans)
Order	Unionida (Unionida)	Decapoda (Decapoda)
Family	Unionidae	Palaemonidae
Genus	Alasmidonta	Palaemon
Species	Alasmidonta varicosa	Palaemon elegans

Evolutionary Relationship

Brook Floater and grass prawm share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

grass prawm

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	grass prawm
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.

grass prawm

Habitat

Inhabits deserts and xeric shrublands within the Palearctic biogeographic realm.

Range

Widely distributed across Asia (4 countries), Europe (11 countries), and North America (United States).

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.

grass prawm

grass prawm (Palaemon elegans) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States