Brook Floater vs Spinose skate

Alasmidonta varicosa compared with Breviraja spinosa

Key Differences

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

Taxonomic Classification

Rank	Brook Floater	Spinose skate
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Elasmobranchii
Order	Unionida (Unionida)	Rajiformes (Rajiformes)
Family	Unionidae	Rajidae
Genus	Alasmidonta	Breviraja
Species	Alasmidonta varicosa	Breviraja spinosa

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Spinose skate

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Spinose skate
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.

Spinose skate

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.