Blue Dolphin vs small tortoiseshell

Stenella coeruleoalba compared with Aglais urticae

Key Differences

• Blue Dolphin is Least Concern while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Blue Dolphin	small tortoiseshell
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum	Chordata (Chordates)	Arthropoda (Artropoda)
Class	Mammalia (mamalia)	Insecta (serangga)
Order	Cetacea (Whales & Dolphins)	Lepidoptera (Butterflies & Moths)
Family	Delphinidae (Oceanic Dolphins)	Nymphalidae (Brush-footed Butterflies)
Genus	Stenella	Aglais
Species	Stenella coeruleoalba	Aglais urticae

Evolutionary Relationship

Blue Dolphin and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (hewan)

Conservation Status

Blue Dolphin

LC — Least Concern

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Blue Dolphin	small tortoiseshell
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).

small tortoiseshell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (41 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

small tortoiseshell

small tortoiseshell (Aglais urticae) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden