Coelacanth vs Gray-bellied Night Monkey

Latimeria chalumnae compared with Aotus lemurinus

Key Differences

• Coelacanth is Critically Endangered while Gray-bellied Night Monkey is Vulnerable.

Taxonomic Classification

Rank	Coelacanth	Gray-bellied Night Monkey
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class	Coelacanthi (Coelacanthi)	Mammalia (lớp Thú)
Order	Coelacanthiformes (Bộ Cá vây tay)	Primates (bộ Linh trưởng)
Family	Latimeriidae	Aotidae
Genus	Latimeria	Aotus
Species	Latimeria chalumnae	Aotus lemurinus

Evolutionary Relationship

Coelacanth and Gray-bellied Night Monkey share a common ancestor at the Phylum level: Chordata. (động vật có dây sống)

Conservation Status

Coelacanth

CR — Critically Endangered

Population: ~500

Trend: Decreasing ↓

Gray-bellied Night Monkey

VU — Vulnerable

Physical Characteristics

Attribute	Coelacanth	Gray-bellied Night Monkey
Diet	Carnivore	—
Average Lifespan	100 years	—
Average Length	1.8 m	—
Average Weight	80.0 kg	—

Habitat & Geographic Range

Coelacanth

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 8 distinct biome types spanning the Australasia and Afrotropic and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Comoros, Indonesia, Mozambique, and South Africa. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Gray-bellied Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Coelacanth

A living fossil thought extinct for 65 million years until rediscovered off South Africa in 1938, coelacanths can reach 2 meters and 90 kg. They belong to an ancient lobe-finned lineage more closely related to tetrapods than to ray-finned fish, making them scientifically invaluable for understanding vertebrate evolution. Found in deep rocky reef habitats of the Indian Ocean, they are nocturnal and undergo internal fertilization, giving birth to fully formed live young. Critically Endangered.