Bigeye thresher vs Black roughscale catshark

Alopias pelagicus compared with Apristurus melanoasper

Key Differences

• Bigeye thresher is Endangered while Black roughscale catshark is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Black roughscale catshark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Chondrichthyes (Cartilaginous Fish)	Chondrichthyes (Cartilaginous Fish)
Order	Lamniformes (Mackerel Sharks)	Carcharhiniformes (Ground Sharks)
Family	Alopiidae	Scyliorhinidae
Genus	Alopias	Apristurus
Species	Alopias pelagicus	Apristurus melanoasper

Evolutionary Relationship

Bigeye thresher and Black roughscale catshark share a common ancestor at the Class level: Chondrichthyes. (Cartilaginous Fish)

Conservation Status

Bigeye thresher

EN — Endangered

Black roughscale catshark

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Black roughscale catshark
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bigeye thresher

Habitat

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

Range

Distributed across Colombia and Taiwan. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Black roughscale catshark

Habitat

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

Bigeye thresher

The Bigeye thresher (Alopias pelagicus) is a species in the genus Alopias. It is currently classified as Endangered on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

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.