Big Finner vs Onion Downy Mildew

Balaenoptera physalus compared with Peronospora destructor

Key Differences

• Big Finner is Endangered while Onion Downy Mildew is Not Evaluated.

Taxonomic Classification

Rank	Big Finner	Onion Downy Mildew
Kingdom	Animalia (Animals)	Chromista (Chromista)
Phylum	Chordata (Chordates)	Oomycota (Oomycetes)
Class	Mammalia (Mammals)	Peronosporea (Peronosporea)
Order	Cetacea (Whales & Dolphins)	Peronosporales (Peronosporales)
Family	Balaenopteridae (Rorquals)	Peronosporaceae
Genus	Balaenoptera (Rorquals)	Peronospora
Species	Balaenoptera physalus	Peronospora destructor

Conservation Status

Big Finner

EN — Endangered

Onion Downy Mildew

NE — Not Evaluated

Physical Characteristics

Attribute	Big Finner	Onion Downy Mildew
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.

Onion Downy Mildew

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Brazil).

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:

🇳🇴 Norway 🇸🇪 Sweden