Blacktail spurdog vs Brook Alder

Squalus melanurus compared with Alnus maritima

Key Differences

• Blacktail spurdog is Data Deficient while Brook Alder is Endangered.

Taxonomic Classification

Rank	Blacktail spurdog	Brook Alder
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Elasmobranchii	Magnoliopsida (Dicots)
Order	Squaliformes (Squaliformes)	Fagales (Beeches & Oaks)
Family	Squalidae	Betulaceae
Genus	Squalus	Alnus
Species	Squalus melanurus	Alnus maritima

Conservation Status

Blacktail spurdog

DD — Data Deficient

Brook Alder

EN — Endangered

Physical Characteristics

Attribute	Blacktail spurdog	Brook Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blacktail spurdog

Brook Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Belgium, France, Netherlands, and United Kingdom. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Brook Alder

The Brook Alder (Alnus maritima) is a species in the genus Alnus. It is currently classified as Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.