Kermadec spiny dogfish vs Hiretaka-tsunozame

Squalus raoulensis compared with Squalus formosus

Key Differences

• Kermadec spiny dogfish is Least Concern while Hiretaka-tsunozame is Endangered.

Taxonomic Classification

Rank	Kermadec spiny dogfish	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 raoulensis	Squalus formosus

Evolutionary Relationship

Kermadec spiny dogfish and Hiretaka-tsunozame share a common ancestor at the Genus level: Squalus.

Conservation Status

Kermadec spiny dogfish

LC — Least Concern

Hiretaka-tsunozame

EN — Endangered

Physical Characteristics

Attribute	Kermadec spiny dogfish	Hiretaka-tsunozame
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Kermadec spiny dogfish

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.