Bigeye thresher vs Black-marked Robber Frog

Alopias pelagicus compared with Pristimantis melanoproctus

Key Differences

• Bigeye thresher is Endangered while Black-marked Robber Frog is Data Deficient.

Taxonomic Classification

Rank	Bigeye thresher	Black-marked Robber Frog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Amphibia (Amphibians)
Order	Lamniformes (Mackerel Sharks)	Anura (Frogs & Toads)
Family	Alopiidae	Craugastoridae
Genus	Alopias	Pristimantis
Species	Alopias pelagicus	Pristimantis melanoproctus

Evolutionary Relationship

Bigeye thresher and Black-marked Robber Frog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Black-marked Robber Frog

DD — Data Deficient

Physical Characteristics

Attribute	Bigeye thresher	Black-marked Robber Frog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bigeye thresher

Habitat

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

Range

Distributed across Colombia and Taiwan. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Black-marked Robber Frog

Habitat

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

Range

Found in Venezuela.

Bigeye thresher

The Bigeye thresher (Alopias pelagicus) is a species in the genus Alopias. It is currently classified as Endangered on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Black-marked Robber Frog

The Black-marked Robber Frog (Pristimantis melanoproctus) is a species in the genus Pristimantis. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. Typically found in freshwater habitats, moist forests, and wetlands.