Bigeye thresher vs Red-tailed Monkey

Alopias pelagicus compared with Cercopithecus ascanius

Key Differences

• Bigeye thresher is Endangered while Red-tailed Monkey is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Red-tailed Monkey
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Lamniformes (Mackerel Sharks)	Primates (Primates)
Family	Alopiidae	Cercopithecidae (Old World Monkeys)
Genus	Alopias	Cercopithecus
Species	Alopias pelagicus	Cercopithecus ascanius

Evolutionary Relationship

Bigeye thresher and Red-tailed Monkey share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Red-tailed Monkey

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Red-tailed Monkey
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.

Red-tailed Monkey

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.