Big Finner vs Lesser guitarfish

Balaenoptera physalus compared with Zapteryx brevirostris

Taxonomic Classification

Rank	Big Finner	Lesser guitarfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Rhinopristiformes (Rhinopristiformes)
Family	Balaenopteridae (Rorquals)	Rhinobatidae
Genus	Balaenoptera (Rorquals)	Zapteryx
Species	Balaenoptera physalus	Zapteryx brevirostris

Evolutionary Relationship

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

Conservation Status

Big Finner

EN — Endangered

Lesser guitarfish

EN — Endangered

Physical Characteristics

Attribute	Big Finner	Lesser guitarfish
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.

Lesser guitarfish

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.