Blacktail spurdog vs Shortnose dogfish

Squalus melanurus compared with Squalus brevirostris

Key Differences

• Blacktail spurdog is Data Deficient while Shortnose dogfish is Endangered.

Taxonomic Classification

Rank	Blacktail 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 melanurus	Squalus brevirostris

Evolutionary Relationship

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

Conservation Status

Blacktail spurdog

DD — Data Deficient

Shortnose dogfish

EN — Endangered

Physical Characteristics

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

Habitat & Geographic Range

Blacktail 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.

Blacktail spurdog

The Blacktail spurdog (Squalus melanurus) is a species in the genus Squalus. It is currently classified as Data Deficient on the IUCN Red List.