Arctic lemming vs Bigeye thresher

Dicrostonyx torquatus compared with Alopias pelagicus

Key Differences

• Arctic lemming is Least Concern while Bigeye thresher is Endangered.

Taxonomic Classification

Rank	Arctic lemming	Bigeye thresher
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Chondrichthyes (Cartilaginous Fish)
Order	Rodentia (Rodents)	Lamniformes (Mackerel Sharks)
Family	Cricetidae	Alopiidae
Genus	Dicrostonyx	Alopias
Species	Dicrostonyx torquatus	Alopias pelagicus

Evolutionary Relationship

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

Conservation Status

Arctic lemming

LC — Least Concern

Bigeye thresher

EN — Endangered

Physical Characteristics

Attribute	Arctic lemming	Bigeye thresher
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic lemming

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Arctic lemming

The Arctic lemming (Dicrostonyx torquatus) is a species in the genus Dicrostonyx. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.