27 Mars 2013
The Bigeye Jack (Caranx sexfasciatus) is a tropical fish that lives in the hot waters of the Pacific and Indian oceans. This species lives in large shoals of hundreds of individuals. In French Polynesia, we can usually encounter the Bigeye jack in areas of strong currents near oceanic slopes. It can easily live in deeper water of up to 490 ft.
As you can guess, this fish takes its name from its "bulging eyes". The Bigeye jack presents a silver colour with a slightly yellow tail. We can easily identify this species from other jackfish with its dorsal fin. Indeed, its dorsal fin has a little white patch that marks its boundary. Also referred as Omuri in maori language, the Bigeye fish is sedentary. It lives in shoal during the day and alone for hunting once night has fallen. The Bigeye Jack feeds on other small fish and crustaceans.
Its size rarely exceeds 2.3 ft and 26 lbs. During the mating season, the females unleash their eggs while the males fertilize them.
The Bigeye jack is very abundant in Polynesian waters. We can assist to impressive gatherings of jackfish around almost any island of French Polynesia. The shoals of jackfish are particularly dense and compact in the Tuamotu Archipelago. These large gatherings are known among divers as the "Balls of jacks". A breathtaking encounter !!
© Photo - V.Truchet, S.Girardot