Pacific Argentine
Argentina del Pacifico
(Argentina sialis)

Pacific Argentine, Argentina sialis: The Pacific Argentine is silver in color with an iridescent silver stripe along the middle of the side.

The top of this fish's head and snout are dusky, there is a black blotch above the eye and there are eight faint dusky bars on the back.

They have elongated compressed bodies with relatively short heads and small eyes and mouths.

They reach a maximum of 22 cm (8.7 inches) in length and they are found over soft bottoms at depths between 30 feet and 900 feet.

The Pacific Argentine cannot be easily confused with any other fish species.

In Mexican waters they are found along the west coast of Baja, throughout the Sea of Cortez and south along the coast of the Mexican mainland to Acapulco. They are seldom seen by humans and are of limited interest to most. The fish shown below is a very rare catch.

The Pacific Argentine is a member of the Argentinidae family which are known in Mexico as Argentinas. They are small to medium sized fishes with elongated, compressed silvery bodies, large eyes, and a small mouth the upper jaw of which lacks teeth. All of the fins are without spines. They have one dorsal fin and a small adipose fin, the pectoral fins are low on the sides, the pelvic fins are under but behind the origin of the dorsal fin, the anal fin is small and the caudal fin is strongly forked.

Globally there are 12 members of the genus of which only one is found in Mexican waters.

Pacific Argentine picture

Pacific Argentine, Argentina sialis: Caught by commercial fishermen in the greater Los Cabos area of Baja California Sur, Mexico, in June 2011. Size 12 cm (4.7 inches). Identification courtesy of H.J. Walker, Jr., Scripps Institution of Oceanography, La Jolla, Calif. Description and photos courtesy of John Snow.