Aosuji tobiei vs Common Fat-tailed Mouse Opossum

Aetomylaeus nichofii compared with Thylamys pusillus

Key Differences

• Aosuji tobiei is Vulnerable while Common Fat-tailed Mouse Opossum is Least Concern.

Taxonomic Classification

Rank	Aosuji tobiei	Common Fat-tailed Mouse Opossum
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)	Didelphimorphia (Didelphimorphia)
Family	Myliobatidae	Didelphidae
Genus	Aetomylaeus	Thylamys
Species	Aetomylaeus nichofii	Thylamys pusillus

Evolutionary Relationship

Aosuji tobiei and Common Fat-tailed Mouse Opossum share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Aosuji tobiei

VU — Vulnerable

Common Fat-tailed Mouse Opossum

LC — Least Concern

Physical Characteristics

Attribute	Aosuji tobiei	Common Fat-tailed Mouse Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Aosuji tobiei

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Fat-tailed Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Aosuji tobiei

The Banded eagle ray (Aetomylaeus nichofii) is a species in the genus Aetomylaeus. It is currently classified as Vulnerable on the IUCN Red List. Native to Asia, inhabiting ecosystems characteristic of the region.

Common Fat-tailed Mouse Opossum

The Common Fat-tailed Mouse Opossum (<em>Thylamys pusillus</em>) is a small marsupial belonging to the genus Thylamys within the family Didelphidae. Like other members of its genus, this species typically stores fat in its tail, which becomes swollen during periods of food abundance and is metabolised during leaner times, a physiological adaptation that provides energy reserves. <em>Thylamys pusillus</em> is generally found in diverse terrestrial and aquatic ecosystems, often in dry woodlands, scrublands, and grassland habitats of South America. The species is assessed as Least Concern on the IUCN Red List, indicating it is not currently considered at risk of extinction. Detailed geographic range data are not available in the current record, but members of this genus are typically distributed across parts of Argentina, Bolivia, Paraguay, and Uruguay. Biological traits including average lifespan, body dimensions, and specific dietary composition remain poorly documented in the scientific literature, though Thylamys species are generally considered omnivorous, often consuming insects, small vertebrates, and plant material.