Bartail spurdog vs Blainvilles dogfish

Squalus notocaudatus compared with Squalus mitsukurii

Key Differences

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

Taxonomic Classification

Rank	Bartail spurdog	Blainvilles 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 mitsukurii

Evolutionary Relationship

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

Conservation Status

Bartail spurdog

LC — Least Concern

Blainvilles dogfish

EN — Endangered

Physical Characteristics

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

Habitat & Geographic Range

Bartail spurdog

Blainvilles dogfish

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.

Range

Found in Chile. 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.

Blainvilles dogfish

The Blainvilles dogfish (Squalus mitsukurii) is a species in the genus Squalus. It is currently classified as Endangered on the IUCN Red List. Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.