Bigeye thresher vs Flathead cat shark

Alopias pelagicus compared with Apristurus macrorhynchus

Key Differences

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

Taxonomic Classification

Rank	Bigeye thresher	Flathead 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	Apristurus
Species	Alopias pelagicus	Apristurus macrorhynchus

Evolutionary Relationship

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

Conservation Status

Bigeye thresher

EN — Endangered

Flathead cat shark

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Flathead 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.

Flathead 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.