Black roughscale catshark vs Chuanbei Toothed Toad

Apristurus melanoasper compared with Oreolalax chuanbeiensis

Key Differences

• Black roughscale catshark is Least Concern while Chuanbei Toothed Toad is Endangered.

Taxonomic Classification

Rank	Black roughscale catshark	Chuanbei Toothed Toad
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Amphibia (Amphibians)
Order	Carcharhiniformes (Ground Sharks)	Anura (Frogs & Toads)
Family	Scyliorhinidae	Megophryidae
Genus	Apristurus	Oreolalax
Species	Apristurus melanoasper	Oreolalax chuanbeiensis

Evolutionary Relationship

Black roughscale catshark and Chuanbei Toothed Toad share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black roughscale catshark

LC — Least Concern

Chuanbei Toothed Toad

EN — Endangered

Physical Characteristics

Attribute	Black roughscale catshark	Chuanbei Toothed Toad
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black roughscale catshark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Chuanbei Toothed Toad

Habitat

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

Black roughscale catshark

The Black roughscale catshark (Apristurus melanoasper) is a species in the genus Apristurus. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Chuanbei Toothed Toad

The Chuanbei Toothed Toad (Oreolalax chuanbeiensis) is an Endangered amphibian endemic to the mountains of northern Sichuan Province in southwestern China. It belongs to the family Megophryidae, a diverse group of litter frogs and toad-like amphibians that is particularly species-rich in the eastern Himalayan and southwestern Chinese highlands. The species name chuanbeiensis refers to northern Sichuan (Chuanbei), reflecting its highly restricted geographic range. Like other Oreolalax species, the Chuanbei Toothed Toad is associated with cold, fast-flowing mountain streams, where larvae develop in torrent conditions that require specialized morphological adaptations including oral suckers. Adults are terrestrial outside the breeding season, sheltering in leaf litter and rocky crevices in montane forest. The IUCN has assessed this species as Endangered due to its small known range, ongoing habitat degradation from logging, agriculture, and infrastructure development in mountain areas, and the impacts of chytridiomycosis (amphibian chytrid fungal disease) which threatens Asian megophryid frogs. Limited survey data mean that the species' full extent of occurrence and population size are poorly constrained.