Galludo cola negra vs Cazón espinoso común

Squalus melanurus compared with Squalus acanthias

Key Differences

• Galludo cola negra is Data Deficient while Cazón espinoso común is Endangered.

Taxonomic Classification

Rank	Galludo cola negra	Cazón espinoso común
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 melanurus	Squalus acanthias

Evolutionary Relationship

Galludo cola negra and Cazón espinoso común share a common ancestor at the Genus level: Squalus.

Conservation Status

Galludo cola negra

DD — Data Deficient

Cazón espinoso común

EN — Endangered

Physical Characteristics

Attribute	Galludo cola negra	Cazón espinoso común
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Galludo cola negra

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.

Galludo cola negra

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

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.