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  Common names: jack (English), trevally (English), jurel (Espanol), pámpano (Espanol)
Gnathanodon speciosus (Forsskål, 1775)

Golden jack,     Golden trevally

Body deep, moderately compressed; adults  without teeth (juveniles with a few weak teeth on lower jaw); lips notably fat and fleshy; gill rakers (including rudiments) 19-22 + 27-30; dorsal rays VII+I, 18-20; anal rays II+I, 15-17; dorsal and anal fins not followed by finlets; pectoral fins longer than head; lateral line moderately arched, straight part with 17-24 scales followed by 17-26 scutes;  body and breast covered with scales.

Silver grey, yellowish on belly,  often with scattered black patches or spots on sides; all fins yellow; tips of tail black; juveniles and young adults silver with 7-11 black bars on body.

Size: to 120 cm.

Habitat: demersal on soft bottoms. Young act as "pilots" for sharks and other large fishes.

Depth: 0-40 m.

Tropical Indo-Pacific from east Africa to the Americas; southern Baja and the southern Gulf of California to Ecuador, Cocos, the Revillagigedos, and Malpelo. Has passed through the Panama Canal to the Atlantic.


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Shorefishes of the tropical eastern Pacific online information system.

Source: Shorefishes of the Tropical Eastern Pacific Online Information System

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