Blue Dolphin vs Smalltooth stingray

Stenella coeruleoalba compared with Hypanus rudis

Key Differences

• Blue Dolphin is Least Concern while Smalltooth stingray is Critically Endangered.

Taxonomic Classification

Rank	Blue Dolphin	Smalltooth stingray
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Myliobatiformes (トビエイ目)
Family	Delphinidae (Oceanic Dolphins)	Dasyatidae
Genus	Stenella	Hypanus
Species	Stenella coeruleoalba	Hypanus rudis

Evolutionary Relationship

Blue Dolphin and Smalltooth stingray share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Blue Dolphin

LC — Least Concern

Smalltooth stingray

CR — Critically Endangered

Physical Characteristics

Attribute	Blue Dolphin	Smalltooth stingray
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).

Smalltooth stingray

Blue Dolphin

スジイルカ（Stenella coeruleoalba）はIUCNレッドリストで軽度懸念（LC）に分類されています。分布域全体で広く豊富に生息し、個体数は安定しており、即座の保全上の懸念はありません。