Brook Floater vs Roughskin Dogfish

Alasmidonta varicosa compared with Cirrhigaleus asper

Key Differences

• Brook Floater is Vulnerable while Roughskin Dogfish is Data Deficient.

Taxonomic Classification

Rank	Brook Floater	Roughskin Dogfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Elasmobranchii
Order	Unionida (Unionida)	Squaliformes (Squaliformes)
Family	Unionidae	Squalidae
Genus	Alasmidonta	Cirrhigaleus
Species	Alasmidonta varicosa	Cirrhigaleus asper

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Roughskin Dogfish

DD — Data Deficient

Physical Characteristics

Attribute	Brook Floater	Roughskin Dogfish
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.

Roughskin Dogfish

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.