Kermadec spiny dogfish vs Taiwan spurdog

Squalus raoulensis compared with Squalus formosus

Key Differences

• Kermadec spiny dogfish is Least Concern while Taiwan spurdog is Endangered.

Taxonomic Classification

Rank	Kermadec spiny 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 raoulensis	Squalus formosus

Evolutionary Relationship

Kermadec spiny dogfish and Taiwan spurdog share a common ancestor at the Genus level: Squalus.

Conservation Status

Kermadec spiny dogfish

LC — Least Concern

Taiwan spurdog

EN — Endangered

Physical Characteristics

Attribute	Kermadec spiny dogfish	Taiwan spurdog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Kermadec spiny 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.