Aratathomas's Yellow-shouldered Bat vs Commerson s Dolphin

Sturnira aratathomasi compared with Cephalorhynchus commersonii

Key Differences

• Aratathomas's Yellow-shouldered Bat is Near Threatened while Commerson s Dolphin is Least Concern.

Taxonomic Classification

Rank	Aratathomas's Yellow-shouldered Bat	Commerson s Dolphin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Chiroptera (Bats)	Cetacea (Whales & Dolphins)
Family	Phyllostomidae	Delphinidae (Oceanic Dolphins)
Genus	Sturnira	Cephalorhynchus
Species	Sturnira aratathomasi	Cephalorhynchus commersonii

Evolutionary Relationship

Aratathomas's Yellow-shouldered Bat and Commerson s Dolphin share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Aratathomas's Yellow-shouldered Bat

NT — Near Threatened

Commerson s Dolphin

LC — Least Concern

Physical Characteristics

Attribute	Aratathomas's Yellow-shouldered Bat	Commerson s Dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Aratathomas's Yellow-shouldered Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Commerson s Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Aratathomas's Yellow-shouldered Bat

The Aratathomas's Yellow-shouldered Bat (Sturnira aratathomasi) is a species in the genus Sturnira. It is currently classified as Near Threatened on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.