Humpback Western dogfish vs Japanese spurdog

Squalus quasimodo compared with Squalus japonicus

Key Differences

• Humpback Western dogfish is Data Deficient while Japanese spurdog is Endangered.

Taxonomic Classification

Rank	Humpback Western dogfish	Japanese 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 quasimodo	Squalus japonicus

Evolutionary Relationship

Humpback Western dogfish and Japanese spurdog share a common ancestor at the Genus level: Squalus.

Conservation Status

Humpback Western dogfish

DD — Data Deficient

Japanese spurdog

EN — Endangered

Physical Characteristics

Attribute	Humpback Western dogfish	Japanese spurdog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Humpback Western dogfish

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.