Black-headed Night Monkey vs Gharial

Aotus nigriceps compared with Gavialis gangeticus

Key Differences

Black-headed Night Monkey is Least Concern while Gharial is Critically Endangered.

Taxonomic Classification

Rank	Black-headed Night Monkey	Gharial
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Reptilia (Reptiles)
Order	Primates (Primates)	Crocodylia (Crocodilians)
Family	Aotidae	Crocodylidae (Crocodiles)
Genus	Aotus	Crocodylus (True Crocodiles)
Species	Aotus nigriceps	Gavialis gangeticus

Evolutionary Relationship

Black-headed Night Monkey and Gharial share a common ancestor at the Phylum level: Chordata. (Chordates)

View Phylum: Chordata

Conservation Status

Black-headed Night Monkey

LC — Least Concern

Gharial

CR — Critically Endangered

Population: ~650

Trend: Increasing ↑

Physical Characteristics

Attribute	Black-headed Night Monkey	Gharial
Diet	—	Carnivore
Average Lifespan	—	60 years
Average Length	—	5.0 m
Average Weight	—	200.0 kg

Habitat & Geographic Range

Black-headed Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Gharial

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical coniferous forests, and temperate broadleaf and mixed forests, among 6 distinct biome types spanning the Indomalayan and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

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

Black-headed Night Monkey

The Black-headed Night Monkey (Aotus nigriceps) is a species in the genus Aotus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.