Black roughscale catshark vs Variable Bluet

Apristurus melanoasper compared with Coenagrion pulchellum

Key Differences

• Black roughscale catshark is Least Concern while Variable Bluet is Endangered.

Taxonomic Classification

Rank	Black roughscale catshark	Variable Bluet
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Chondrichthyes (Cartilaginous Fish)	Insecta (Insects)
Order	Carcharhiniformes (Ground Sharks)	Odonata (Odonata)
Family	Scyliorhinidae	Coenagrionidae
Genus	Apristurus	Coenagrion
Species	Apristurus melanoasper	Coenagrion pulchellum

Evolutionary Relationship

Black roughscale catshark and Variable Bluet share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Black roughscale catshark

LC — Least Concern

Variable Bluet

EN — Endangered

Physical Characteristics

Attribute	Black roughscale catshark	Variable Bluet
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black roughscale catshark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Variable Bluet

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

Black roughscale catshark

The Black roughscale catshark (Apristurus melanoasper) is a species in the genus Apristurus. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Variable Bluet

Variable Bluet (Coenagrion pulchellum) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.