Big Finner vs Hooktooth shark

Balaenoptera physalus compared with Hemigaleus microstoma

Key Differences

• Big Finner is Endangered while Hooktooth shark is Vulnerable.

Taxonomic Classification

Rank	Big Finner	Hooktooth shark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Chondrichthyes (Cartilaginous Fish)
Order	Cetacea (Whales & Dolphins)	Carcharhiniformes (Ground Sharks)
Family	Balaenopteridae (Rorquals)	Hemigaleidae
Genus	Balaenoptera (Rorquals)	Hemigaleus
Species	Balaenoptera physalus	Hemigaleus microstoma

Evolutionary Relationship

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

Conservation Status

Big Finner

EN — Endangered

Hooktooth shark

VU — Vulnerable

Physical Characteristics

Attribute	Big Finner	Hooktooth shark
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.

Hooktooth shark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Found in Taiwan. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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 1 countries:

🇹🇼 Taiwan