Amazon River Dolphin vs Austral ray

Inia geoffrensis compared with Bathyraja griseocauda

Key Differences

• Amazon River Dolphin is Data Deficient while Austral ray is Endangered.

Taxonomic Classification

Rank	Amazon River Dolphin	Austral ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Rajiformes (Rajiformes)
Family	Iniidae	Arhynchobatidae
Genus	Inia	Bathyraja
Species	Inia geoffrensis	Bathyraja griseocauda

Evolutionary Relationship

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

Conservation Status

Amazon River Dolphin

DD — Data Deficient

Austral ray

EN — Endangered

Physical Characteristics

Attribute	Amazon River Dolphin	Austral ray
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.

Austral ray

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.

Range

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

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.

Austral ray

The Austral ray (Bathyraja griseocauda) is a species in the genus Bathyraja. It is currently classified as Endangered on the IUCN Red List. Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.