Amazonian Nectomys vs Big Finner

Nectomys rattus compared with Balaenoptera physalus

Key Differences

• Amazonian Nectomys is Least Concern while Big Finner is Endangered.

Taxonomic Classification

Rank	Amazonian Nectomys	Big Finner
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Cetacea (Whales & Dolphins)
Family	Cricetidae	Balaenopteridae (Rorquals)
Genus	Nectomys	Balaenoptera (Rorquals)
Species	Nectomys rattus	Balaenoptera physalus

Evolutionary Relationship

Amazonian Nectomys and Big Finner share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Amazonian Nectomys

LC — Least Concern

Big Finner

EN — Endangered

Physical Characteristics

Attribute	Amazonian Nectomys	Big Finner
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazonian Nectomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

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.

Amazonian Nectomys

The Amazonian Nectomys (Nectomys rattus) is a species in the genus Nectomys. It is currently classified as Least Concern on the IUCN Red List. 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.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇻🇪 Venezuela