Black skate vs Brook Floater

Bathyraja trachura compared with Alasmidonta varicosa

Key Differences

• Black skate is Least Concern while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	Black skate	Brook Floater
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Elasmobranchii	Bivalvia (Bivalvia)
Order	Rajiformes (Rajiformes)	Unionida (Unionida)
Family	Arhynchobatidae	Unionidae
Genus	Bathyraja	Alasmidonta
Species	Bathyraja trachura	Alasmidonta varicosa

Evolutionary Relationship

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

Conservation Status

Black skate

LC — Least Concern

Brook Floater

VU — Vulnerable

Physical Characteristics

Attribute	Black skate	Brook Floater
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black skate

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.

Black skate

The Black skate (Bathyraja trachura) is a species in the genus Bathyraja. It is currently classified as Least Concern on the IUCN Red List.

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.