Brook Floater vs Dwarf black stingray

Alasmidonta varicosa compared with Hemitrygon parvonigra

Key Differences

• Brook Floater is Vulnerable while Dwarf black stingray is Data Deficient.

Taxonomic Classification

Rank	Brook Floater	Dwarf black 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	Hemitrygon
Species	Alasmidonta varicosa	Hemitrygon parvonigra

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Dwarf black stingray

DD — Data Deficient

Physical Characteristics

Attribute	Brook Floater	Dwarf black 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.

Dwarf black 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.