Almaco jack
  • Seriola rivoliana
  • EnglishName: Almaco jack
  • Local Name : Andhun mas
  • Size : Common to 70 cm; max. 1.1 cm
  • Family: Order : Specimen
  • Distinctive Characters: First dorsal fin with 7 spines, second dorsal fin with 1 spine and 27-33 rays. Anal fin with 2 detached spines followed by 1 spine and 18-22 rays. Gill rakers (excluding rudiments) on the first arch 22-26. Body elongate, moderately deep and slightly compressed. Upper jaw broad at end, extending to below posterior mid-point of pupil. No scutes on lateral line. Grooves present on caudal peduncle.
  • Colour: Pale brown. Dark bar extending from eye to dorsal spine (most marked in juveniles). Fins mostly dark; pelvics may be white ventrally; anal fin usually with white lobe; caudal with pale margin.
  • Habitat and Biology: Oceanic and semi-demersal at depths of 30-160 m. Rarely found in inshore waters. Small juveniles are found offshore, under floating plants and debris. Feeds on fish.
  • Distribution: Circumtropical.
  • Remarks: The distinctive dark eye bar of Seriola rivoliana gives this species its local name, ‘andhun’ being the Dhivehi word for kohl.