Coelacanth vs common bottlenose dolphin

Latimeria chalumnae compared with Tursiops truncatus

Key Differences

• Coelacanth is Critically Endangered while common bottlenose dolphin is Least Concern.
• common bottlenose dolphin is 3.8x heavier than Coelacanth.
• Coelacanth lives longer (100 years vs 45 years).

Taxonomic Classification

Rank	Coelacanth	common bottlenose dolphin
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)	Cetacea (Whales & Dolphins)
Family	Latimeriidae	Delphinidae (Oceanic Dolphins)
Genus	Latimeria	Tursiops (Bottlenose Dolphins)
Species	Latimeria chalumnae	Tursiops truncatus

Evolutionary Relationship

Coelacanth and common bottlenose dolphin share a common ancestor at the Phylum level: Chordata. (động vật có dây sống)

Conservation Status

Coelacanth

CR — Critically Endangered

Population: ~500

Trend: Decreasing ↓

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

Attribute	Coelacanth	common bottlenose dolphin
Diet	Carnivore	Carnivore
Average Lifespan	100 years	45 years
Average Length	1.8 m	3.0 m
Average Weight	80.0 kg	300.0 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.

common bottlenose dolphin

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Colombia, Ecuador, Venezuela).

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 bottlenose dolphin

The most studied and recognized dolphin species, bottlenose dolphins inhabit warm and temperate oceans worldwide, from coastal shallows to the open sea. Highly intelligent with large brains relative to body size, they demonstrate self-recognition, complex communication, and social learning. They live in fluid fission-fusion societies and cooperate to herd fish. A keystone indicator species for marine ecosystem health.