Cazón espinoso común vs Kermadec spiny dogfish

Squalus acanthias compared with Squalus raoulensis

Key Differences

• Cazón espinoso común is Endangered while Kermadec spiny dogfish is Least Concern.

Taxonomic Classification

Rank	Cazón espinoso común	Kermadec spiny dogfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Elasmobranchii	Elasmobranchii
Order same	Squaliformes (Squaliformes)	Squaliformes (Squaliformes)
Family same	Squalidae	Squalidae
Genus same	Squalus	Squalus
Species	Squalus acanthias	Squalus raoulensis

Evolutionary Relationship

Cazón espinoso común and Kermadec spiny dogfish share a common ancestor at the Genus level: Squalus.

Conservation Status

Cazón espinoso común

EN — Endangered

Kermadec spiny dogfish

LC — Least Concern

Physical Characteristics

Attribute	Cazón espinoso común	Kermadec spiny dogfish
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cazón espinoso común

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

Distributed across Chile, Denmark, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Kermadec spiny dogfish

Cazón espinoso común

The Blue Dog (Squalus acanthias) 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.