Almaco Jack

Almaco Jacks

The Almaco jack, Seriola rivoliana, is a game fish of the family, Carangidae. They feed, both day and night, on other, smaller, fish, such as baitfish. Almaco jack are also known to eat small squid.

The Almaco jack is known to have less elongated, more flattened bodies than most species of jack. Their dorsal fin and anal fins are elongated, and have a definite sickle shape to their outer edges.

almaco jacks IN fIJI

The dorsal fin of the Almaco jack also separates it from other jacks in that the first rays of the dorsal fin's longest parts are nearly twice as long as the dorsal spines.

Almaco jacks are generally dusky-colored with faint amber or olive colored stripes running down their sides. Their upper bodies and lower fins are usually dark brown or dark blue-green. The belly of the Almaco jack is much lighter colored and has been known to look brassy or lavender colored. The nuchal bar on adults is dark colored along with most of the fins. Exceptions are the pelvic fins which are white on the ventralsides.

The Almaco jack is a pelagic species that can be found in small groups on slopes and off of reefs at depths from 5 to 160 meters. They are also known to visit wrecks more often than most other species of jack.

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