Northeastern Brazilian dogfish vs Taiwan spurdog

Squalus bahiensis compared with Squalus formosus

Key Differences

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

Taxonomic Classification

Rank	Northeastern Brazilian dogfish	Taiwan 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 bahiensis	Squalus formosus

Evolutionary Relationship

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

Conservation Status

Northeastern Brazilian dogfish

DD — Data Deficient

Taiwan spurdog

EN — Endangered

Physical Characteristics

Attribute	Northeastern Brazilian dogfish	Taiwan spurdog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Northeastern Brazilian dogfish

Taiwan 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.