Arctic barrel-bubble vs Black roughscale catshark

Retusa obtusa compared with Apristurus melanoasper

Taxonomic Classification

Rank	Arctic barrel-bubble	Black roughscale catshark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Chondrichthyes (Cartilaginous Fish)
Order	Cephalaspidea (Cephalaspidea)	Carcharhiniformes (Ground Sharks)
Family	Retusidae	Scyliorhinidae
Genus	Retusa	Apristurus
Species	Retusa obtusa	Apristurus melanoasper

Evolutionary Relationship

Arctic barrel-bubble and Black roughscale catshark share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Arctic barrel-bubble

LC — Least Concern

Black roughscale catshark

LC — Least Concern

Physical Characteristics

Attribute	Arctic barrel-bubble	Black roughscale catshark
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic barrel-bubble

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Black roughscale catshark

Habitat

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

Arctic barrel-bubble

The Arctic barrel-bubble (Retusa obtusa) is a species in the genus Retusa. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

Black roughscale catshark

The Black roughscale catshark (Apristurus melanoasper) is a species in the genus Apristurus. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.