Blacktail spurdog vs Hiretaka-tsunozame

Squalus melanurus compared with Squalus formosus

Key Differences

• Blacktail spurdog is Data Deficient while Hiretaka-tsunozame is Endangered.

Taxonomic Classification

Rank	Blacktail spurdog	Hiretaka-tsunozame
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	Squaliformes (ツノザメ目)	Squaliformes (ツノザメ目)
Family same	Squalidae	Squalidae
Genus same	Squalus	Squalus
Species	Squalus melanurus	Squalus formosus

Evolutionary Relationship

Blacktail spurdog and Hiretaka-tsunozame share a common ancestor at the Genus level: Squalus.

Conservation Status

Blacktail spurdog

DD — Data Deficient

Hiretaka-tsunozame

EN — Endangered

Physical Characteristics

Attribute	Blacktail spurdog	Hiretaka-tsunozame
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blacktail spurdog

Hiretaka-tsunozame

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

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

Blacktail spurdog

The Blacktail spurdog (Squalus melanurus) is a species in the genus Squalus. It is currently classified as Data Deficient on the IUCN Red List.