Bigeye thresher vs Eastern Pacific Black Ghostshark

Alopias pelagicus compared with Hydrolagus melanophasma

Key Differences

• Bigeye thresher is Endangered while Eastern Pacific Black Ghostshark is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Eastern Pacific Black Ghostshark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Holocephali (Holocephali)
Order	Lamniformes (Mackerel Sharks)	Chimaeriformes (Chimaeriformes)
Family	Alopiidae	Chimaeridae
Genus	Alopias	Hydrolagus
Species	Alopias pelagicus	Hydrolagus melanophasma

Evolutionary Relationship

Bigeye thresher and Eastern Pacific Black Ghostshark share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Eastern Pacific Black Ghostshark

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Eastern Pacific Black Ghostshark
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.

Eastern Pacific Black Ghostshark

Habitat

Native to South America, inhabiting ecosystems characteristic of the region.

Range

Found in Chile.

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.