Onaga-ei vs Mekong freshwater stingray

Hemitrygon bennettii compared with Hemitrygon laosensis

Key Differences

• Onaga-ei is Vulnerable while Mekong freshwater stingray is Endangered.

Taxonomic Classification

Rank	Onaga-ei	Mekong freshwater stingray
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Elasmobranchii	Elasmobranchii
Order same	Myliobatiformes (トビエイ目)	Myliobatiformes (トビエイ目)
Family same	Dasyatidae	Dasyatidae
Genus same	Hemitrygon	Hemitrygon
Species	Hemitrygon bennettii	Hemitrygon laosensis

Evolutionary Relationship

Onaga-ei and Mekong freshwater stingray share a common ancestor at the Genus level: Hemitrygon.

Conservation Status

Onaga-ei

VU — Vulnerable

Mekong freshwater stingray

EN — Endangered

Physical Characteristics

Attribute	Onaga-ei	Mekong freshwater stingray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Onaga-ei

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Mekong freshwater stingray

Onaga-ei

The Bennett's cowtail (Hemitrygon bennettii) is a species in the genus Hemitrygon. It is currently classified as Vulnerable on the IUCN Red List. Native to Asia, inhabiting ecosystems characteristic of the region.