Bigeye thresher vs Black-eared Red-backed Vole

Alopias pelagicus compared with Eothenomys olitor

Key Differences

• Bigeye thresher is Endangered while Black-eared Red-backed Vole is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Black-eared Red-backed Vole
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Lamniformes (Mackerel Sharks)	Rodentia (Rodents)
Family	Alopiidae	Cricetidae
Genus	Alopias	Eothenomys
Species	Alopias pelagicus	Eothenomys olitor

Evolutionary Relationship

Bigeye thresher and Black-eared Red-backed Vole share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Black-eared Red-backed Vole

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Black-eared Red-backed Vole
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.

Black-eared Red-backed Vole

Habitat

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.

Black-eared Red-backed Vole

The Black-eared Red-backed Vole (Eothenomys olitor) is a species in the genus Eothenomys. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.