Brook Floater vs Ray

Alasmidonta varicosa compared with Atlantoraja castelnaui

Key Differences

• Brook Floater is Vulnerable while Ray is Critically Endangered.

Taxonomic Classification

Rank	Brook Floater	Ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Elasmobranchii
Order	Unionida (Unionida)	Rajiformes (Rajiformes)
Family	Unionidae	Arhynchobatidae
Genus	Alasmidonta	Atlantoraja
Species	Alasmidonta varicosa	Atlantoraja castelnaui

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Ray

CR — Critically Endangered

Physical Characteristics

Attribute	Brook Floater	Ray
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.

Ray

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.