Bigeye thresher vs Hammerhead

Alopias pelagicus compared with Sphyrna corona

Key Differences

• Bigeye thresher is Endangered while Hammerhead is Critically Endangered.

Taxonomic Classification

Rank	Bigeye thresher	Hammerhead
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	Sphyrnidae (Hammerhead Sharks)
Genus	Alopias	Sphyrna (Hammerhead Sharks)
Species	Alopias pelagicus	Sphyrna corona

Evolutionary Relationship

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

Conservation Status

Bigeye thresher

EN — Endangered

Hammerhead

CR — Critically Endangered

Physical Characteristics

Attribute	Bigeye thresher	Hammerhead
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.

Hammerhead

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.