Thunnus albacares, commonly known as the yellowfin tuna, is known for its distinctive yellow dorsal fin and finlets. It inhabits tropical and subtropical oceans worldwide, often forming schools. Known for their speed and agility, they play a crucial role in marine ecosystems as apex predators.

Thunnus albacares, commonly known as the yellowfin tuna, is native to the tropical and subtropical oceans worldwide. It is primarily found in the Pacific, Atlantic, and Indian Oceans, with notable populations around the equator and between the latitudes of approximately 40°N and 40°S. Key regions include the Caribbean Sea, the Gulf of Mexico, and the waters surrounding Southeast Asia and the Pacific Islands.

Yellowfin tuna inhabit open ocean waters, typically at depths between 0 and 250 meters. They thrive in warm, tropical, and subtropical waters, with surface temperatures ranging from 18°C to 31°C. These fish are highly migratory and tend to follow warm-water currents.

Yellowfin tuna are pelagic predators, playing a crucial role in the marine food web. They primarily feed on fish, crustaceans, and squid. Their role as a top predator helps maintain the balance of oceanic ecosystems. They have adaptations for fast swimming and long-distance travel, which are essential for their migratory lifestyle and ability to hunt in the open ocean.