Blue Dolphin vs Roughskin Dogfish

Stenella coeruleoalba compared with Cirrhigaleus asper

Key Differences

• Blue Dolphin is Least Concern while Roughskin Dogfish is Data Deficient.

Taxonomic Classification

Rank	Blue Dolphin	Roughskin Dogfish
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	Cirrhigaleus
Species	Stenella coeruleoalba	Cirrhigaleus asper

Evolutionary Relationship

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

Conservation Status

Blue Dolphin

LC — Least Concern

Roughskin Dogfish

DD — Data Deficient

Physical Characteristics

Attribute	Blue Dolphin	Roughskin Dogfish
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).

Roughskin Dogfish

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.