Brook Floater vs Chungan Sucker Frog

Alasmidonta varicosa compared with Amolops chunganensis

Key Differences

• Brook Floater is Vulnerable while Chungan Sucker Frog is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Chungan Sucker Frog
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum	Mollusca (연체동물)	Chordata (척삭동물)
Class	Bivalvia (이매패류)	Amphibia (양서류)
Order	Unionida (석패목)	Anura (개구리목)
Family	Unionidae	Ranidae
Genus	Alasmidonta	Amolops
Species	Alasmidonta varicosa	Amolops chunganensis

Evolutionary Relationship

Brook Floater and Chungan Sucker Frog share a common ancestor at the Kingdom level: Animalia. (동물)

Conservation Status

Brook Floater

VU — Vulnerable

Chungan Sucker Frog

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Chungan Sucker Frog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

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

Range

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

Chungan Sucker Frog

Habitat

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

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, 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.