Bigeye thresher vs Black-fronted Duiker

Alopias pelagicus compared with Cephalophus nigrifrons

Key Differences

• Bigeye thresher is Endangered while Black-fronted Duiker is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Black-fronted Duiker
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Lamniformes (Mackerel Sharks)	Artiodactyla (Even-toed Ungulates)
Family	Alopiidae	Bovidae (Bovids)
Genus	Alopias	Cephalophus
Species	Alopias pelagicus	Cephalophus nigrifrons

Evolutionary Relationship

Bigeye thresher and Black-fronted Duiker share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Black-fronted Duiker

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Black-fronted Duiker
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-fronted Duiker

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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-fronted Duiker

The Black-fronted Duiker (Cephalophus nigrifrons) is a species in the genus Cephalophus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.