Japanese spurdog vs shortnose spurdog

Squalus japonicus compared with Squalus megalops

Key Differences

• Japanese spurdog is Endangered while shortnose spurdog is Least Concern.

Taxonomic Classification

Rank	Japanese spurdog	shortnose spurdog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Elasmobranchii	Elasmobranchii
Order same	Squaliformes (Squaliformes)	Squaliformes (Squaliformes)
Family same	Squalidae	Squalidae
Genus same	Squalus	Squalus
Species	Squalus japonicus	Squalus megalops

Evolutionary Relationship

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

Conservation Status

Japanese spurdog

EN — Endangered

shortnose spurdog

LC — Least Concern

Physical Characteristics

Attribute	Japanese spurdog	shortnose spurdog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

shortnose spurdog