Amazon River Dolphin vs Lesser Siren

Inia geoffrensis compared with Siren intermedia

Key Differences

• Amazon River Dolphin is Data Deficient while Lesser Siren is Least Concern.

Taxonomic Classification

Rank	Amazon River Dolphin	Lesser Siren
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Cetacea (Whales & Dolphins)	Caudata (Caudata)
Family	Iniidae	Sirenidae
Genus	Inia	Siren
Species	Inia geoffrensis	Siren intermedia

Evolutionary Relationship

Amazon River Dolphin and Lesser Siren share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Amazon River Dolphin

DD — Data Deficient

Lesser Siren

LC — Least Concern

Physical Characteristics

Attribute	Amazon River Dolphin	Lesser Siren
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazon River Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Lesser Siren

Habitat

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

Range

Distributed across Belgium and Mexico.

Amazon River Dolphin

The Amazon River Dolphin (Inia geoffrensis) is a species in the genus Inia. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. Typically found in diverse terrestrial and aquatic ecosystems.