Pacific white-sided dolphin vs undulate ray

Lagenorhynchus obliquidens compared with Raja undulata

Key Differences

• Pacific white-sided dolphin is Least Concern while undulate ray is Endangered.

Taxonomic Classification

Rank	Pacific white-sided dolphin	undulate ray
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class	Mammalia (lớp Thú)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Rajiformes (Bộ Cá đuối)
Family	Delphinidae (Oceanic Dolphins)	Rajidae
Genus	Lagenorhynchus	Raja
Species	Lagenorhynchus obliquidens	Raja undulata

Evolutionary Relationship

Pacific white-sided dolphin and undulate ray share a common ancestor at the Phylum level: Chordata. (động vật có dây sống)

Conservation Status

Pacific white-sided dolphin

LC — Least Concern

undulate ray

EN — Endangered

Physical Characteristics

Attribute	Pacific white-sided dolphin	undulate ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Pacific white-sided dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.