Pacific Spiny-rat vs Speckled ray

Proechimys decumanus compared with Raja polystigma

Key Differences

• Pacific Spiny-rat is Near Threatened while Speckled ray is Least Concern.

Taxonomic Classification

Rank	Pacific Spiny-rat	Speckled ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Rodentia (Rodents)	Rajiformes (Rajiformes)
Family	Echimyidae	Rajidae
Genus	Proechimys	Raja
Species	Proechimys decumanus	Raja polystigma

Evolutionary Relationship

Pacific Spiny-rat and Speckled ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Pacific Spiny-rat

NT — Near Threatened

Speckled ray

LC — Least Concern

Physical Characteristics

Attribute	Pacific Spiny-rat	Speckled ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Pacific Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Speckled ray