roker vs undulate ray

Raja clavata compared with Raja undulata

Key Differences

• roker is Near Threatened while undulate ray is Endangered.

Taxonomic Classification

Rank	roker	undulate ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Elasmobranchii	Elasmobranchii
Order same	Rajiformes (Rajiformes)	Rajiformes (Rajiformes)
Family same	Rajidae	Rajidae
Genus same	Raja	Raja
Species	Raja clavata	Raja undulata

Evolutionary Relationship

roker and undulate ray share a common ancestor at the Genus level: Raja.

Conservation Status

roker

NT — Near Threatened

undulate ray

EN — Endangered

Physical Characteristics

Attribute	roker	undulate ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

roker

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Portugal, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

undulate ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found in Belgium. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Shared Countries

Both species can be found in 1 countries:

🇧🇪 Belgium