Brook Floater vs Highfin dogfish

Alasmidonta varicosa compared with Centroscyllium excelsum

Key Differences

• Brook Floater is Vulnerable while Highfin dogfish is Near Threatened.

Taxonomic Classification

Rank	Brook Floater	Highfin dogfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Elasmobranchii
Order	Unionida (Unionida)	Squaliformes (Squaliformes)
Family	Unionidae	Etmopteridae
Genus	Alasmidonta	Centroscyllium
Species	Alasmidonta varicosa	Centroscyllium excelsum

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Highfin dogfish

NT — Near Threatened

Physical Characteristics

Attribute	Brook Floater	Highfin 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.

Highfin 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.