Mountain Stream Siredon vs Pacific Spiny-rat

Ambystoma altamirani compared with Proechimys decumanus

Key Differences

• Mountain Stream Siredon is Endangered while Pacific Spiny-rat is Near Threatened.

Taxonomic Classification

Rank	Mountain Stream Siredon	Pacific Spiny-rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Mammalia (Mammals)
Order	Caudata (Caudata)	Rodentia (Rodents)
Family	Ambystomatidae	Echimyidae
Genus	Ambystoma	Proechimys
Species	Ambystoma altamirani	Proechimys decumanus

Evolutionary Relationship

Mountain Stream Siredon and Pacific Spiny-rat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Mountain Stream Siredon

EN — Endangered

Pacific Spiny-rat

NT — Near Threatened

Physical Characteristics

Attribute	Mountain Stream Siredon	Pacific Spiny-rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Mountain Stream Siredon

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

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