Black roughscale catshark vs European otter

Apristurus melanoasper compared with Lutra lutra

Key Differences

• Black roughscale catshark is Least Concern while European otter is Vulnerable.

Taxonomic Classification

Rank	Black roughscale catshark	European otter
Kingdom same	Animalia (حيوانات)	Animalia (حيوانات)
Phylum same	Chordata (حبليات)	Chordata (حبليات)
Class	Chondrichthyes (أسماك غضروفية)	Mammalia (ثدييات)
Order	Carcharhiniformes (قرش أرضي)	Carnivora (لواحم)
Family	Scyliorhinidae	Mustelidae (Weasels & Otters)
Genus	Apristurus	Lutra (Otters)
Species	Apristurus melanoasper	Lutra lutra

Evolutionary Relationship

Black roughscale catshark and European otter share a common ancestor at the Phylum level: Chordata. (حبليات)

Conservation Status

Black roughscale catshark

LC — Least Concern

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Black roughscale catshark	European otter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Black roughscale catshark

Habitat

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

European otter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). Currently classified as Vulnerable 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.

European otter

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.