Blue Dolphin vs Rough ray

Stenella coeruleoalba compared with Raja radula

Key Differences

• Blue Dolphin is Least Concern while Rough ray is Endangered.

Taxonomic Classification

Rank	Blue Dolphin	Rough ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Rajiformes (Rajiformes)
Family	Delphinidae (Oceanic Dolphins)	Rajidae
Genus	Stenella	Raja
Species	Stenella coeruleoalba	Raja radula

Evolutionary Relationship

Blue Dolphin and Rough ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Blue Dolphin

LC — Least Concern

Rough ray

EN — Endangered

Physical Characteristics

Attribute	Blue Dolphin	Rough ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela).

Rough ray

Blue Dolphin

Blue Dolphin (Stenella coeruleoalba) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.