Brook Floater vs Narrowtail stingray

Alasmidonta varicosa compared with Pastinachus gracilicaudus

Key Differences

• Brook Floater is Vulnerable while Narrowtail stingray is Endangered.

Taxonomic Classification

Rank	Brook Floater	Narrowtail stingray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Elasmobranchii
Order	Unionida (Unionida)	Myliobatiformes (Myliobatiformes)
Family	Unionidae	Dasyatidae
Genus	Alasmidonta	Pastinachus
Species	Alasmidonta varicosa	Pastinachus gracilicaudus

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Narrowtail stingray

EN — Endangered

Physical Characteristics

Attribute	Brook Floater	Narrowtail stingray
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.

Narrowtail stingray

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.