Angular rough shark vs Common Least Skipper

Oxynotus paradoxus compared with Ancyloxypha numitor

Key Differences

• Angular rough shark is Vulnerable while Common Least Skipper is Least Concern.

Taxonomic Classification

Rank	Angular rough shark	Common Least Skipper
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Chordata (脊索動物)	Arthropoda (節足動物)
Class	Elasmobranchii	Insecta (昆虫)
Order	Squaliformes (ツノザメ目)	Lepidoptera (チョウ目)
Family	Oxynotidae	Hesperiidae
Genus	Oxynotus	Ancyloxypha
Species	Oxynotus paradoxus	Ancyloxypha numitor

Evolutionary Relationship

Angular rough shark and Common Least Skipper share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Angular rough shark

VU — Vulnerable

Common Least Skipper

LC — Least Concern

Physical Characteristics

Attribute	Angular rough shark	Common Least Skipper
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Angular rough shark

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Portugal. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Least Skipper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada and United States.

Angular rough shark

The Angular rough shark (Oxynotus paradoxus) is a species in the genus Oxynotus. It is currently classified as Vulnerable on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

Common Least Skipper

The Common Least Skipper (<em>Ancyloxypha numitor</em>) is a small butterfly in the family Hesperiidae, classified as Least Concern on the IUCN Red List. It is native to Canada and the United States, where it typically inhabits virtually all terrestrial and freshwater habitats within its range, showing a particular affinity for moist, grassy areas near water. The species is among the smallest skippers in North America, characterized by orange and brown wing coloration and a rapid, low-flying flight pattern close to vegetation. Adults typically nectar on small flowers while larvae feed on grasses, particularly those in wet meadows, marshes, stream margins, and disturbed grassy areas. The Common Least Skipper is frequently observed in wetland margins, wet prairies, and roadsides with rank grass growth. Its wide distribution across North America and habitat generalism across moist grassland and wetland types support its stable population and Least Concern conservation status. Biological traits of this species remain poorly documented in the scientific literature.