Arnoux's beaked whale vs Big Finner

Berardius arnuxii compared with Balaenoptera physalus

Key Differences

• Arnoux's beaked whale is Least Concern while Big Finner is Endangered.

Taxonomic Classification

Rank	Arnoux's beaked whale	Big Finner
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class same	Mammalia (млекопитающие)	Mammalia (млекопитающие)
Order same	Cetacea (Whales & Dolphins)	Cetacea (Whales & Dolphins)
Family	Hyperoodontidae	Balaenopteridae (Rorquals)
Genus	Berardius	Balaenoptera (Rorquals)
Species	Berardius arnuxii	Balaenoptera physalus

Evolutionary Relationship

Arnoux's beaked whale and Big Finner share a common ancestor at the Order level: Cetacea. (Whales & Dolphins)

Conservation Status

Arnoux's beaked whale

LC — Least Concern

Big Finner

EN — Endangered

Physical Characteristics

Attribute	Arnoux's beaked whale	Big Finner
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arnoux's beaked whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Big Finner

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Arnoux's beaked whale

The Arnoux's beaked whale, Berardius arnuxii, is a species. It is currently assessed as least concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Big Finner

Big Finner (Balaenoptera physalus) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.