Eastern longnose spurdog vs Japanese spurdog

Squalus grahami compared with Squalus japonicus

Key Differences

• Eastern longnose spurdog is Near Threatened while Japanese spurdog is Endangered.

Taxonomic Classification

Rank	Eastern longnose spurdog	Japanese spurdog
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Elasmobranchii	Elasmobranchii
Order same	Squaliformes (Dornhaiartige)	Squaliformes (Dornhaiartige)
Family same	Squalidae	Squalidae
Genus same	Squalus	Squalus
Species	Squalus grahami	Squalus japonicus

Evolutionary Relationship

Eastern longnose spurdog and Japanese spurdog share a common ancestor at the Genus level: Squalus.

Conservation Status

Eastern longnose spurdog

NT — Near Threatened

Japanese spurdog

EN — Endangered

Physical Characteristics

Attribute	Eastern longnose spurdog	Japanese spurdog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Eastern longnose spurdog

Japanese spurdog

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.