Blue Dolphin vs Variable Bluet

Stenella coeruleoalba compared with Coenagrion pulchellum

Key Differences

• Blue Dolphin is Least Concern while Variable Bluet is Endangered.

Taxonomic Classification

Rank	Blue Dolphin	Variable Bluet
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Arthropoda (สัตว์ขาปล้อง)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Insecta (แมลง)
Order	Cetacea (Whales & Dolphins)	Odonata (Odonata)
Family	Delphinidae (Oceanic Dolphins)	Coenagrionidae
Genus	Stenella	Coenagrion
Species	Stenella coeruleoalba	Coenagrion pulchellum

Evolutionary Relationship

Blue Dolphin and Variable Bluet share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Blue Dolphin

LC — Least Concern

Variable Bluet

EN — Endangered

Physical Characteristics

Attribute	Blue Dolphin	Variable Bluet
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).

Variable Bluet

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Luxembourg, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Variable Bluet

Variable Bluet (Coenagrion pulchellum) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden