Blacktail spurdog vs Fatspine spurdog

Squalus melanurus compared with Squalus crassispinus

Key Differences

• Blacktail spurdog is Data Deficient while Fatspine spurdog is Least Concern.

Taxonomic Classification

Rank	Blacktail spurdog	Fatspine spurdog
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 crassispinus

Evolutionary Relationship

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

Conservation Status

Blacktail spurdog

DD — Data Deficient

Fatspine spurdog

LC — Least Concern

Physical Characteristics

Attribute	Blacktail spurdog	Fatspine spurdog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

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.