Big Finner vs Belomordyi Del’fin

Balaenoptera physalus compared with Lagenorhynchus albirostris

Key Differences

• Big Finner is Endangered while Belomordyi Del’fin is Not Evaluated.

Taxonomic Classification

Rank	Big Finner	Belomordyi Del’fin
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	Balaenopteridae (Rorquals)	Delphinidae (Oceanic Dolphins)
Genus	Balaenoptera (Rorquals)	Lagenorhynchus
Species	Balaenoptera physalus	Lagenorhynchus albirostris

Evolutionary Relationship

Big Finner and Belomordyi Del’fin share a common ancestor at the Order level: Cetacea. (Whales & Dolphins)

Conservation Status

Big Finner

EN — Endangered

Belomordyi Del’fin

NE — Not Evaluated

Physical Characteristics

Attribute	Big Finner	Belomordyi Del’fin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Belomordyi Del’fin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden