Big Finner vs Rosette river stingray

Balaenoptera physalus compared with Potamotrygon schroederi

Key Differences

• Big Finner is Endangered while Rosette river stingray is Data Deficient.

Taxonomic Classification

Rank	Big Finner	Rosette river stingray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Myliobatiformes (Myliobatiformes)
Family	Balaenopteridae (Rorquals)	Potamotrygonidae
Genus	Balaenoptera (Rorquals)	Potamotrygon
Species	Balaenoptera physalus	Potamotrygon schroederi

Evolutionary Relationship

Big Finner and Rosette river stingray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Big Finner

EN — Endangered

Rosette river stingray

DD — Data Deficient

Physical Characteristics

Attribute	Big Finner	Rosette river stingray
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.

Rosette river stingray

Habitat

Native to South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Colombia and 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