Atlantic Bluefin Tuna vs Ocean Sunfish

Thunnus thynnus compared with Mola mola

Key Differences

• Atlantic Bluefin Tuna is Least Concern while Ocean Sunfish is Vulnerable.
• Atlantic Bluefin Tuna is carnivore while Ocean Sunfish is omnivore.
• Ocean Sunfish is 4.0x heavier than Atlantic Bluefin Tuna.
• Atlantic Bluefin Tuna lives longer (40 years vs 10 years).

Taxonomic Classification

Rank	Atlantic Bluefin Tuna	Ocean Sunfish
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Actinopterygii (Ray-finned Fish)	Actinopterygii (Ray-finned Fish)
Order same	Perciformes (Perch-like Fish)	Perciformes (Perch-like Fish)
Family same	Scombridae (Tunas & Mackerels)	Scombridae (Tunas & Mackerels)
Genus same	Thunnus (Tunas)	Thunnus (Tunas)
Species	Thunnus thynnus	Mola mola

Evolutionary Relationship

Atlantic Bluefin Tuna and Ocean Sunfish share a common ancestor at the Genus level: Thunnus. (Tunas)

Conservation Status

Atlantic Bluefin Tuna

LC — Least Concern

Trend: Increasing ↑

Ocean Sunfish

VU — Vulnerable

Trend: Decreasing ↓

Physical Characteristics

Attribute	Atlantic Bluefin Tuna	Ocean Sunfish
Diet	Carnivore	Omnivore
Average Lifespan	40 years	10 years
Average Length	2.5 m	2.7 m
Average Weight	250.0 kg	1.0 t

Habitat & Geographic Range

Atlantic Bluefin Tuna

Habitat

Found across multiple habitat types including temperate coniferous forests, montane grasslands and shrublands, and Mediterranean forests and woodlands within the Palearctic biogeographic realm.

Range

Distributed across Italy, Japan, Morocco, Spain, and United States.

Ocean Sunfish

Habitat

Typically found in a wide range of habitat types.

Range

Distributed across Australia, Japan, South Africa, and United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Atlantic Bluefin Tuna

The Atlantic bluefin tuna is one of the largest, fastest, and most valuable fish in the world. A single fish has sold for over $3 million.

Ocean Sunfish

The ocean sunfish is the heaviest known bony fish in the world, weighing up to 2,300 kg.

Shared Countries

Both species can be found in 2 countries:

🇯🇵 Japan 🇺🇸 United States