Big Finner vs Johnstone's Robber Frog

Balaenoptera physalus compared with Eleutherodactylus johnstonei

Key Differences

• Big Finner is Endangered while Johnstone's Robber Frog is Least Concern.

Taxonomic Classification

Rank	Big Finner	Johnstone's Robber Frog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Cetacea (Whales & Dolphins)	Anura (Frogs & Toads)
Family	Balaenopteridae (Rorquals)	Eleutherodactylidae
Genus	Balaenoptera (Rorquals)	Eleutherodactylus
Species	Balaenoptera physalus	Eleutherodactylus johnstonei

Evolutionary Relationship

Big Finner and Johnstone's Robber Frog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Big Finner

EN — Endangered

Johnstone's Robber Frog

LC — Least Concern

Physical Characteristics

Attribute	Big Finner	Johnstone's Robber Frog
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.

Johnstone's Robber Frog

Habitat

Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Neotropic biogeographic realm.

Range

Found across North America (9 countries) and South America (Colombia, Guyana, Venezuela).

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 2 countries:

🇨🇴 Colombia 🇻🇪 Venezuela