Common Metad vs Largespot river stingray

Millardia meltada compared with Potamotrygon falkneri

Key Differences

• Common Metad is Least Concern while Largespot river stingray is Data Deficient.

Taxonomic Classification

Rank	Common Metad	Largespot river stingray
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	Muridae (Mice & Rats)	Potamotrygonidae
Genus	Millardia	Potamotrygon
Species	Millardia meltada	Potamotrygon falkneri

Evolutionary Relationship

Common Metad and Largespot river stingray share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Common Metad

LC — Least Concern

Largespot river stingray

DD — Data Deficient

Physical Characteristics

Attribute	Common Metad	Largespot river stingray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Metad

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Largespot river stingray

Habitat

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

Range

Found in Brazil.

Common Metad

The Common Metad (<em>Millardia meltada</em>) is a rodent belonging to the genus <em>Millardia</em> within the family Muridae. As a member of the Old World rats and mice, this species is typically found in diverse terrestrial and aquatic ecosystems across its range. The Common Metad is classified as Least Concern on the IUCN Red List, indicating that its populations are currently stable and not facing immediate extinction risk. Detailed biological traits such as body length, weight, and lifespan have not been widely documented for this species in available records. Its taxonomy places it within the order Rodentia, which encompasses a broad array of gnawing mammals adapted to a wide variety of ecological niches. While specific dietary habits are not well characterized in the available data, members of the genus <em>Millardia</em> are generally understood to be omnivorous, feeding on plant material and invertebrates typical of their habitat. Ongoing monitoring is important for ensuring this species maintains its current conservation standing.