LC
Least Concern
A
Animalia
N
Native
Archipelago Wide (sea)
The Bigeye trevally, also known as the bigeye jack, is a fascinating fish species that thrives in the tropical and subtropical waters of the Galapagos Islands. Known for their large, reflective eyes, which assist them in navigating the ocean depths, especially during nighttime, these fish are often found near rocky reefs and volcanic underwater structures. One of their most remarkable behaviors is their tendency to form large, coordinated schools that create stunning visual displays for divers and snorkelers. These "tornado" formations are not only mesmerizing but also serve as a defense mechanism against predators. Bigeye trevallies typically grow up to 80 centimeters in length and exhibit a sleek, metallic silver body with a slight blue or greenish tint, sometimes showing faint dark bars along their sides. Opportunistic hunters, they feed on small fish, crustaceans, and other invertebrates, often hunting in groups. While not endemic to the Galapagos, they are a native species and can be found year-round within the Galapagos Marine Reserve, contributing to the rich biodiversity of the region. Their presence, both as predators and prey, plays a crucial role in maintaining the balance of the marine ecosystem. The sight of their schooling behavior and the vibrancy they add to the underwater landscape make them a key attraction for visitors exploring the islands’ waters.