Bigeye thresher vs Cortez Hagfish

Alopias pelagicus compared with Eptatretus sinus

Key Differences

• Bigeye thresher is Endangered while Cortez Hagfish is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Cortez Hagfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Myxini (Myxini)
Order	Lamniformes (Mackerel Sharks)	Myxiniformes (Myxiniformes)
Family	Alopiidae	Myxinidae
Genus	Alopias	Eptatretus
Species	Alopias pelagicus	Eptatretus sinus

Evolutionary Relationship

Bigeye thresher and Cortez Hagfish share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Cortez Hagfish

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Cortez Hagfish
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.

Cortez Hagfish

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.