Black roughscale catshark vs sei whale

Apristurus melanoasper compared with Balaenoptera borealis

Key Differences

• Black roughscale catshark is Least Concern while sei whale is Endangered.

Taxonomic Classification

Rank	Black roughscale catshark	sei whale
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Carcharhiniformes (Ground Sharks)	Cetacea (Whales & Dolphins)
Family	Scyliorhinidae	Balaenopteridae (Rorquals)
Genus	Apristurus	Balaenoptera (Rorquals)
Species	Apristurus melanoasper	Balaenoptera borealis

Evolutionary Relationship

Black roughscale catshark and sei whale share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black roughscale catshark

LC — Least Concern

sei whale

EN — Endangered

Physical Characteristics

Attribute	Black roughscale catshark	sei whale
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black roughscale catshark

Habitat

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

sei whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.