Brook Floater vs smooth hound

Alasmidonta varicosa compared with Mustelus mustelus

Key Differences

• Brook Floater is Vulnerable while smooth hound is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater	smooth hound
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Chondrichthyes (Cartilaginous Fish)
Order	Unionida (Unionida)	Carcharhiniformes (Ground Sharks)
Family	Unionidae	Triakidae
Genus	Alasmidonta	Mustelus
Species	Alasmidonta varicosa	Mustelus mustelus

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

smooth hound

NE — Not Evaluated

Physical Characteristics

Attribute	Brook Floater	smooth hound
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.

smooth hound

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Distributed across Denmark, Norway, and Sweden.

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.