Blacktail spurdog vs Green-eyed dogfish

Squalus melanurus compared with Squalus griffini

Key Differences

• Blacktail spurdog is Data Deficient while Green-eyed dogfish is Least Concern.

Taxonomic Classification

Rank	Blacktail spurdog	Green-eyed dogfish
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Elasmobranchii	Elasmobranchii
Order same	Squaliformes (Bộ Cá nhám góc)	Squaliformes (Bộ Cá nhám góc)
Family same	Squalidae	Squalidae
Genus same	Squalus	Squalus
Species	Squalus melanurus	Squalus griffini

Evolutionary Relationship

Blacktail spurdog and Green-eyed dogfish share a common ancestor at the Genus level: Squalus.

Conservation Status

Blacktail spurdog

DD — Data Deficient

Green-eyed dogfish

LC — Least Concern

Physical Characteristics

Attribute	Blacktail spurdog	Green-eyed dogfish
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.