Black shark vs Chunky False Brook Salamander

Etmopterus granulosus compared with Aquiloeurycea cephalica

Taxonomic Classification

Rank	Black shark	Chunky False Brook Salamander
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Amphibia (Amphibians)
Order	Squaliformes (Squaliformes)	Caudata (Caudata)
Family	Etmopteridae	Plethodontidae
Genus	Etmopterus	Aquiloeurycea
Species	Etmopterus granulosus	Aquiloeurycea cephalica

Evolutionary Relationship

Black shark and Chunky False Brook Salamander share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black shark

LC — Least Concern

Chunky False Brook Salamander

LC — Least Concern

Physical Characteristics

Attribute	Black shark	Chunky False Brook Salamander
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black shark

Habitat

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

Range

Found in Chile.

Chunky False Brook Salamander

Habitat

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

Range

Found in Mexico.

Black shark

The Black shark (Etmopterus granulosus) is a species in the genus Etmopterus. It is currently classified as Least Concern on the IUCN Red List. Native to South America, inhabiting ecosystems characteristic of the region.

Chunky False Brook Salamander

The Chunky False Brook Salamander (Aquiloeurycea cephalica) is a Least Concern plethodontid salamander endemic to Mexico, found in cloud forest and humid montane habitats in the Sierra Madre Oriental and related mountain ranges. The genus Aquiloeurycea is a recently erected Mexican endemic genus segregated from the broader genus Pseudoeurycea, comprising several small, robustly built (hence 'chunky') salamanders associated with high-elevation forests. Like all plethodontids, A. cephalica is a lungless salamander that breathes entirely through its moist, vascularized skin and the lining of its mouth. It is a direct developer, skipping the aquatic larval stage entirely and laying eggs in terrestrial microhabitats such as rotting logs, leaf litter, and soil. A. cephalica inhabits cool, humid forests of pine-oak and cloud forest zones in northern Mexico, where it forages for small invertebrates in the leaf litter and soil. The IUCN assesses it as Least Concern due to its reasonably wide distribution within its montane range. Deforestation, cattle grazing, and the conversion of cloud forest to agriculture represent ongoing threats to populations throughout its range.