Bigeye thresher vs Filetail cat shark

Alopias pelagicus compared with Parmaturus xaniurus

Key Differences

• Bigeye thresher is Endangered while Filetail cat shark is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Filetail cat shark
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	Parmaturus
Species	Alopias pelagicus	Parmaturus xaniurus

Evolutionary Relationship

Bigeye thresher and Filetail cat shark share a common ancestor at the Class level: Chondrichthyes. (Cartilaginous Fish)

Conservation Status

Bigeye thresher

EN — Endangered

Filetail cat shark

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Filetail cat shark
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.

Filetail cat shark

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.