Big Finner vs Leopard Numbfish

Balaenoptera physalus compared with Narcine leoparda

Key Differences

• Big Finner is Endangered while Leopard Numbfish is Vulnerable.

Taxonomic Classification

Rank	Big Finner	Leopard Numbfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Torpediniformes (electric ray)
Family	Balaenopteridae (Rorquals)	Narcinidae
Genus	Balaenoptera (Rorquals)	Narcine
Species	Balaenoptera physalus	Narcine leoparda

Evolutionary Relationship

Big Finner and Leopard Numbfish share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Big Finner

EN — Endangered

Leopard Numbfish

VU — Vulnerable

Physical Characteristics

Attribute	Big Finner	Leopard Numbfish
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.

Leopard Numbfish

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.