Japanese spurdog vs Northeastern Brazilian dogfish

Squalus japonicus compared with Squalus bahiensis

Key Differences

• Japanese spurdog is Endangered while Northeastern Brazilian dogfish is Data Deficient.

Taxonomic Classification

Rank	Japanese spurdog	Northeastern Brazilian dogfish
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 japonicus	Squalus bahiensis

Evolutionary Relationship

Japanese spurdog and Northeastern Brazilian dogfish share a common ancestor at the Genus level: Squalus.

Conservation Status

Japanese spurdog

EN — Endangered

Northeastern Brazilian dogfish

DD — Data Deficient

Physical Characteristics

Attribute	Japanese spurdog	Northeastern Brazilian dogfish
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.

Northeastern Brazilian dogfish