Bigeye thresher vs Braun’s Dwarf Frog

Alopias pelagicus compared with Physalaemus lisei

Key Differences

• Bigeye thresher is Endangered while Braun’s Dwarf Frog is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Braun’s Dwarf 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	Leptodactylidae
Genus	Alopias	Physalaemus
Species	Alopias pelagicus	Physalaemus lisei

Evolutionary Relationship

Bigeye thresher and Braun’s Dwarf Frog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Braun’s Dwarf Frog

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Braun’s Dwarf 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.

Braun’s Dwarf Frog

Habitat

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

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.

Braun’s Dwarf Frog

The Braun’s Dwarf Frog (Physalaemus lisei) is a species in the genus Physalaemus. It is currently classified as Least Concern on the IUCN Red List. Typically found in freshwater habitats, moist forests, and wetlands.