Coelacanth vs Common Seahorse

Latimeria chalumnae compared with Hippocampus kuda

Key Differences

• Coelacanth is Critically Endangered while Common Seahorse is Vulnerable.
• Coelacanth is 8000.0x heavier than Common Seahorse.
• Coelacanth lives longer (100 years vs 5 years).

Taxonomic Classification

Rank	Coelacanth	Common Seahorse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Coelacanthi (Coelacanthi)	Actinopterygii (Ray-finned Fish)
Order	Coelacanthiformes (Coelacanthiformes)	Perciformes (Perch-like Fish)
Family	Latimeriidae	Pomacentridae (Clownfish & Damselfish)
Genus	Latimeria	Amphiprion (Clownfish)
Species	Latimeria chalumnae	Hippocampus kuda

Evolutionary Relationship

Coelacanth and Common Seahorse share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Coelacanth

CR — Critically Endangered

Population: ~500

Trend: Decreasing ↓

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Physical Characteristics

Attribute	Coelacanth	Common Seahorse
Diet	Carnivore	Carnivore
Average Lifespan	100 years	5 years
Average Length	1.8 m	17 cm
Average Weight	80.0 kg	10 g

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.

Common Seahorse

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 7 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Australia, India, Indonesia, Japan, and Philippines. 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.

Common Seahorse

The common seahorse is found in tropical and temperate waters. Males carry and deliver the babies.

Shared Countries

Both species can be found in 1 countries:

🇮🇩 Indonesia