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Bigeye Tuna
Legendary

Bigeye Tuna

Thunnus obesus

A large, deep-bodied tuna species with characteristically large eyes and a robust build. Highly prized by sport and commercial fishermen for their fighting ability and excellent table fare.

The record

Bigeye Tuna at a glance

Scientific name
Thunnus obesus
Typical size
30-60 inches, 50-200 lbs
State record
227 lbs 12 oz
Water
Saltwater
Habitat
Offshore
Rarity in the Fishdex™
Legendary
Where it lives

Habitat

Found in tropical and subtropical waters worldwide, typically in deeper offshore waters beyond the continental shelf. Anglers target them with deep-dropping techniques, trolling large baits, or fishing around seamounts and drop-offs in 200-1000+ feet of water.

Catch one and it is yours

Log a bigeye tuna through the Cobia Camera and this entry fills in with your photo, your personal best, and the exact conditions on the day. The app also carries the slot and season rules for wherever you are standing.

How the Fishdex™ works
Questions

Bigeye Tuna questions people ask

Bigeye Tuna is Thunnus obesus.

A typical bigeye tuna runs 30-60 inches, 50-200 lbs. Cobia records the length and weight of every bigeye tuna you log and keeps your personal best on its Fishdex entry.

Found in tropical and subtropical waters worldwide, typically in deeper offshore waters beyond the continental shelf. Anglers target them with deep-dropping techniques, trolling large baits, or fishing around seamounts and drop-offs in 200-1000+ feet of water. It is a salt water species, filed under offshore in the Fishdex.

Yes. Log one through the Cobia Camera and this entry fills in with your own photo, your personal best, and the conditions on the day you caught it. The app also carries the slot limits and season dates for wherever you are standing. It is free.

Free on iPhone

Tomorrow morning starts tonight

Set your home water, pick a drive radius, and wake up to a plan.

Download Cobia on the App Store Android coming soon

iPhone, iOS 17 or later. Setup takes about a minute.