Seriola Rivoliana




10 - 130 pounds

35" - 60"

Longfin Yellowtail

Also Known As: Falcate Amberjack, Almaco Jack  

Guides Who Fish This Species

Longfin Yellowtail (Seriola rivoliana) Description

The Longfin Yellowtail, also known as the Almaco Jack, is notable for its dusky dorsal coloring, ranging from brown or silvery blue-green to olivaceous, and the amber strip on its side. Compared to other jack fish species, the Longfin Yellowtail has a more flattened and less elongated body.

The dorsal and anal fins of the Longfin Yellowtail are elongated with their outer edges sickle-shaped. The first rays of the dorsal fin on the Longfin Yellowtail are longer than its dorsal spines, while with other jack species, the reverse can be said.

The Greater Amberjack is similar in appearance to the Longfin Yellowtail. The best way to distinguish them is to look at the second dorsal fin. Compared side by side, the second dorsal fin on the Longfin Yellowtail is much higher.


Size & Diet

Most commonly found Longfin Yellowtail can measure up to 35 inches in length, with weight from 10 to 20 pounds. The fish can grow up to 60 inches and 130 pounds. The Longfin Yellowtail is carnivorous. It feeds day and night and is a fast-moving predator. It prefers to feed on bony fishes, particularly baitfish and invertebrates such as squid and shrimp.


Interesting Facts about Longfin Yellowtail

  • The Longfin Yellowtail is reported to spawn throughout the entire year, going as often as every week.
  • The flesh on this species can be mistaken for white albacore when prepared raw as it is dense and thick.
  • The flesh on smaller Longfin Yellowtail is more desirable, as larger ones are prone to ciguatera. That's why most anglers practice catch and release for big Longfin Yellowtail.
  • The Longfin Yellowtail is best served raw, but can also taste delectable when grilled or baked in foil with vegetables. Cooks do not recommend frying it as it tends to trap oil. It is best consumed within 3 days of its catch, though it keeps well frozen and vacuum-packed.
  • The Longfin Yellowtail is prone to skin-based parasites, which it gets rid of by brushing against sharks. Scuba divers also report Longfin