Big Finner vs Chinese river dolphin

Balaenoptera physalus compared with Lipotes vexillifer

Key Differences

• Big Finner is Endangered while Chinese river dolphin is Critically Endangered.

Taxonomic Classification

Rank	Big Finner	Chinese river dolphin
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Mammalia (lớp Thú)	Mammalia (lớp Thú)
Order same	Cetacea (Whales & Dolphins)	Cetacea (Whales & Dolphins)
Family	Balaenopteridae (Rorquals)	Lipotidae
Genus	Balaenoptera (Rorquals)	Lipotes
Species	Balaenoptera physalus	Lipotes vexillifer

Evolutionary Relationship

Big Finner and Chinese river dolphin share a common ancestor at the Order level: Cetacea. (Whales & Dolphins)

Conservation Status

Big Finner

EN — Endangered

Chinese river dolphin

CR — Critically Endangered

Physical Characteristics

Attribute	Big Finner	Chinese river dolphin
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.

Chinese river dolphin

Habitat

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.

Chinese river dolphin

The Chinese River Dolphin (Lipotes vexillifer) is a species in the genus Lipotes. It is currently classified as Critically Endangered on the IUCN Red List.