Blue Dolphin vs Fatspine spurdog

Stenella coeruleoalba compared with Squalus crassispinus

Taxonomic Classification

Rank	Blue Dolphin	Fatspine spurdog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Squaliformes (Squaliformes)
Family	Delphinidae (Oceanic Dolphins)	Squalidae
Genus	Stenella	Squalus
Species	Stenella coeruleoalba	Squalus crassispinus

Evolutionary Relationship

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

Conservation Status

Blue Dolphin

LC — Least Concern

Fatspine spurdog

LC — Least Concern

Physical Characteristics

Attribute	Blue Dolphin	Fatspine spurdog
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).

Fatspine spurdog

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.