Black roughscale catshark vs Taiwan spurdog

Apristurus melanoasper compared with Squalus formosus

Key Differences

• Black roughscale catshark is Least Concern while Taiwan spurdog is Endangered.

Taxonomic Classification

Rank	Black roughscale catshark	Taiwan spurdog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Elasmobranchii
Order	Carcharhiniformes (Ground Sharks)	Squaliformes (Squaliformes)
Family	Scyliorhinidae	Squalidae
Genus	Apristurus	Squalus
Species	Apristurus melanoasper	Squalus formosus

Evolutionary Relationship

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

Conservation Status

Black roughscale catshark

LC — Least Concern

Taiwan spurdog

EN — Endangered

Physical Characteristics

Attribute	Black roughscale catshark	Taiwan spurdog
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.

Taiwan spurdog

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan. 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.