Ceylon Spiny Mouse vs Coelacanth

Mus fernandoni compared with Latimeria chalumnae

Key Differences

• Ceylon Spiny Mouse is Endangered while Coelacanth is Critically Endangered.

Taxonomic Classification

Rank	Ceylon Spiny Mouse	Coelacanth
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Coelacanthi (Coelacanthi)
Order	Rodentia (Rodents)	Coelacanthiformes (Coelacanthiformes)
Family	Muridae (Mice & Rats)	Latimeriidae
Genus	Mus (House Mice)	Latimeria
Species	Mus fernandoni	Latimeria chalumnae

Evolutionary Relationship

Ceylon Spiny Mouse and Coelacanth share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Ceylon Spiny Mouse

EN — Endangered

Coelacanth

CR — Critically Endangered

Population: ~500

Trend: Decreasing ↓

Physical Characteristics

Attribute	Ceylon Spiny Mouse	Coelacanth
Diet	—	Carnivore
Average Lifespan	—	100 years
Average Length	—	1.8 m
Average Weight	—	80.0 kg

Habitat & Geographic Range

Ceylon Spiny Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Ceylon Spiny Mouse

The Ceylon Spiny Mouse (Mus fernandoni) is a species in the genus Mus. It is currently classified as Endangered on the IUCN Red List.

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.