petit rorqual vs Fen Roller

Balaenoptera acutorostrata compared with Ancylis paludana

Key Differences

• petit rorqual is Least Concern while Fen Roller is Near Threatened.

Taxonomic Classification

Rank	petit rorqual	Fen Roller
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum	Chordata (Chordates)	Arthropoda (arthropodes)
Class	Mammalia (mammifères)	Insecta (insecte)
Order	Cetacea (Whales & Dolphins)	Lepidoptera (Butterflies & Moths)
Family	Balaenopteridae (Rorquals)	Tortricidae
Genus	Balaenoptera (Rorquals)	Ancylis
Species	Balaenoptera acutorostrata	Ancylis paludana

Evolutionary Relationship

petit rorqual and Fen Roller share a common ancestor at the Kingdom level: Animalia. (animal)

Conservation Status

petit rorqual

LC — Least Concern

Fen Roller

NT — Near Threatened

Physical Characteristics

Attribute	petit rorqual	Fen Roller
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

petit rorqual

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador).

Fen Roller

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

petit rorqual

Bagwhale (Balaenoptera acutorostrata) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden