Brook Floater vs Challenger skate

Alasmidonta varicosa compared with Rajella challengeri

Key Differences

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

Taxonomic Classification

Rank	Brook Floater	Challenger 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	Rajella
Species	Alasmidonta varicosa	Rajella challengeri

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Challenger skate

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Challenger 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.

Challenger 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.

Challenger skate

The Challenger skate (Rajella challengeri) is a species in the genus Rajella. It is currently classified as Least Concern on the IUCN Red List.