Angular rough shark vs Chungan Sucker Frog

Oxynotus centrina compared with Amolops chunganensis

Key Differences

• Angular rough shark is Not Evaluated while Chungan Sucker Frog is Least Concern.

Taxonomic Classification

Rank	Angular rough shark	Chungan Sucker Frog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Amphibia (Amphibians)
Order	Squaliformes (Squaliformes)	Anura (Frogs & Toads)
Family	Oxynotidae	Ranidae
Genus	Oxynotus	Amolops
Species	Oxynotus centrina	Amolops chunganensis

Evolutionary Relationship

Angular rough shark and Chungan Sucker Frog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Angular rough shark

NE — Not Evaluated

Chungan Sucker Frog

LC — Least Concern

Physical Characteristics

Attribute	Angular rough shark	Chungan Sucker Frog
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 Denmark, Norway, and Sweden.

Chungan Sucker Frog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Angular rough shark

The Angular rough shark (Oxynotus centrina) is a species in the genus Oxynotus. Native to Europe, inhabiting ecosystems characteristic of the region.

Chungan Sucker Frog

The Chungan Sucker Frog (Amolops chunganensis) is a Least Concern torrent frog in the family Ranidae, endemic to central China, particularly associated with the mountains of Chongqing (formerly Chungan County, from which the species name derives) and surrounding areas. The genus Amolops, commonly known as torrent frogs or cascade frogs, is adapted for life in and around fast-flowing mountain streams, with expanded toe pads and sucker-like discs that allow clinging to wet, smooth rock surfaces in high-velocity water. Breeding occurs in stream environments, where males call from boulders at the stream edge and larvae develop in oxygenated torrent pools with specialized mouthparts for adhering to rock substrates. A. chunganensis inhabits subtropical and montane forests at elevations ranging from low to mid altitudes in Sichuan and Chongqing. The IUCN assesses this species as Least Concern, reflecting a relatively wide distribution within suitable stream habitats across central China. However, it faces ongoing pressure from water quality degradation, dam construction and stream modification, deforestation, and pollution from agricultural and urban runoff. Amolops frogs are sensitive to siltation and chemical contamination of breeding streams.