Habitat

The bigeye tuna (Thunnus obesus) is a cosmopolitan species that inhabits the tropical and subtropical waters of the Atlantic, Pacific, and Indian Oceans. Unlike other tuna species, the bigeye tuna is absent from the Mediterranean Sea. This pelagic and migratory fish moves between the surface and depths of up to two hundred and fifty meters, with adult specimens tending to frequent deeper water layers than juveniles. The preferred water temperature ranges between seventeen and twenty-two degrees Celsius, although it can tolerate a wider range from thirteen to twenty-nine degrees Celsius.

Baits

The baits used to target bigeye tuna vary depending on the fishing technique and environmental conditions. The most effective include:

• Live baits: Among the best choices are sardines, mackerel, and cephalopods, which are particularly attractive to large specimens.
• Artificial lures: The most commonly used are poppers, minnows, and trolling lures, which mimic the movement of natural prey.
• Natural baits: Fresh fish pieces or squid are particularly effective, especially in drifting fishing.

Best fishing techniques

To catch bigeye tuna, anglers use different techniques, including:

1. Trolling: Used to locate schools of tuna, it employs artificial lures or live baits dragged at different speeds.
2. Drifting fishing: Consists of letting the boat drift while using natural baits and chumming to attract tuna.
3. Jigging: Based on the use of metal jigs that are bounced at depth to stimulate the fish's strike.
4. Popper fishing: A surface technique using artificial lures that create splashes and vibrations to attract tuna.

The bigeye tuna is a fascinating and challenging fish to catch, requiring targeted strategies and proper equipment. Knowing its habitat, the most effective baits, and the best fishing techniques increases the chances of success during a fishing trip.