Amerika-aka-ei vs Narrow-headed Vole

Hypanus americanus compared with Microtus gregalis

Key Differences

• Amerika-aka-ei is Near Threatened while Narrow-headed Vole is Least Concern.

Taxonomic Classification

Rank	Amerika-aka-ei	Narrow-headed Vole
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Elasmobranchii	Mammalia (哺乳類)
Order	Myliobatiformes (トビエイ目)	Rodentia (ネズミ目)
Family	Dasyatidae	Cricetidae
Genus	Hypanus	Microtus
Species	Hypanus americanus	Microtus gregalis

Evolutionary Relationship

Amerika-aka-ei and Narrow-headed Vole share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Amerika-aka-ei

NT — Near Threatened

Narrow-headed Vole

LC — Least Concern

Physical Characteristics

Attribute	Amerika-aka-ei	Narrow-headed Vole
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amerika-aka-ei

Habitat

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

Range

Found in Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Narrow-headed Vole

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.