Alston s Cotton Rat vs Amerika-aka-ei

Sigmodon alstoni compared with Hypanus americanus

Key Differences

• Alston s Cotton Rat is Least Concern while Amerika-aka-ei is Near Threatened.

Taxonomic Classification

Rank	Alston s Cotton Rat	Amerika-aka-ei
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Elasmobranchii
Order	Rodentia (ネズミ目)	Myliobatiformes (トビエイ目)
Family	Cricetidae	Dasyatidae
Genus	Sigmodon	Hypanus
Species	Sigmodon alstoni	Hypanus americanus

Evolutionary Relationship

Alston s Cotton Rat and Amerika-aka-ei share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Alston s Cotton Rat

LC — Least Concern

Amerika-aka-ei

NT — Near Threatened

Physical Characteristics

Attribute	Alston s Cotton Rat	Amerika-aka-ei
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alston s Cotton Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

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.

Alston s Cotton Rat

The Alston s Cotton Rat (Sigmodon alstoni) is a species in the genus Sigmodon. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems. Distributed across Colombia and Venezuela.

Shared Countries

Both species can be found in 1 countries:

🇻🇪 Venezuela