Bigeye thresher vs Whiteface Hagfish

Alopias pelagicus compared with Myxine circifrons

Key Differences

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

Taxonomic Classification

Rank	Bigeye thresher	Whiteface 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	Myxine
Species	Alopias pelagicus	Myxine circifrons

Evolutionary Relationship

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

Conservation Status

Bigeye thresher

EN — Endangered

Whiteface Hagfish

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Whiteface 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.

Whiteface Hagfish

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.