Bartail spurdog vs Shortnose dogfish

Squalus notocaudatus compared with Squalus brevirostris

Key Differences

• Bartail spurdog is Least Concern while Shortnose dogfish is Endangered.

Taxonomic Classification

Rank	Bartail spurdog	Shortnose dogfish
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 notocaudatus	Squalus brevirostris

Evolutionary Relationship

Bartail spurdog and Shortnose dogfish share a common ancestor at the Genus level: Squalus.

Conservation Status

Bartail spurdog

LC — Least Concern

Shortnose dogfish

EN — Endangered

Physical Characteristics

Attribute	Bartail spurdog	Shortnose dogfish
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bartail spurdog

Shortnose dogfish

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.

Bartail spurdog

The Bartail spurdog (Squalus notocaudatus) is a species in the genus Squalus. It is currently classified as Least Concern on the IUCN Red List.