Commerson s Dolphin vs Aka-ginzame

Cephalorhynchus commersonii compared with Hydrolagus mitsukurii

Key Differences

• Commerson s Dolphin is Least Concern while Aka-ginzame is Near Threatened.

Taxonomic Classification

Rank	Commerson s Dolphin	Aka-ginzame
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Holocephali (全頭亜綱)
Order	Cetacea (Whales & Dolphins)	Chimaeriformes (ギンザメ目)
Family	Delphinidae (Oceanic Dolphins)	Chimaeridae
Genus	Cephalorhynchus	Hydrolagus
Species	Cephalorhynchus commersonii	Hydrolagus mitsukurii

Evolutionary Relationship

Commerson s Dolphin and Aka-ginzame share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Commerson s Dolphin

LC — Least Concern

Aka-ginzame

NT — Near Threatened

Physical Characteristics

Attribute	Commerson s Dolphin	Aka-ginzame
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Commerson s Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Aka-ginzame

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.