Atlantic Electric Ray vs Commerson s Dolphin

Tetronarce nobiliana compared with Cephalorhynchus commersonii

Key Differences

• Atlantic Electric Ray is Not Evaluated while Commerson s Dolphin is Least Concern.

Taxonomic Classification

Rank	Atlantic Electric Ray	Commerson s Dolphin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Torpediniformes (electric ray)	Cetacea (Whales & Dolphins)
Family	Torpedinidae	Delphinidae (Oceanic Dolphins)
Genus	Tetronarce	Cephalorhynchus
Species	Tetronarce nobiliana	Cephalorhynchus commersonii

Evolutionary Relationship

Atlantic Electric Ray and Commerson s Dolphin share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Atlantic Electric Ray

NE — Not Evaluated

Commerson s Dolphin

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Electric Ray	Commerson s Dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atlantic Electric Ray

Habitat

Native to Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Venezuela.

Commerson s Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Atlantic Electric Ray

The Atlantic Electric Ray (Tetronarce nobiliana) is a species in the genus Tetronarce. Native to Europe and South America, inhabiting ecosystems characteristic of the region.

Commerson s Dolphin

<em>Cephalorhynchus commersonii</em>, commonly known as Commerson's Dolphin, is a small cetacean in the family Delphinidae. This species is classified as Least Concern on the IUCN Red List and is notable for its striking black-and-white coloration, which makes it one of the most visually distinctive dolphin species. Commerson's Dolphins typically inhabit coastal and nearshore marine environments of the Southern Hemisphere, particularly around the Falkland Islands, the southern tip of South America, and a geographically isolated population near the Kerguelen Islands in the Indian Ocean. These dolphins are highly social animals, often observed in small groups engaging in acrobatic behaviors near the surface. They typically feed on fish, squid, and crustaceans, often hunting cooperatively in shallow waters and kelp beds. Their average lifespan is approximately 18 years, and they are known for their fast, energetic swimming. Commerson's Dolphins are sometimes caught as bycatch in fishing nets, posing a localized conservation concern despite their overall Least Concern status.