Bar Jack

Scientific Name Caranx ruber

Native To Subtropical and tropical areas of the western Atlantic Ocean from Bermuda to Venezuela

Habitat Lagoons, coastal and outer coral reefs

Diet These jacks eat small fish, shrimp and cephalopods.

Size and Age 60 cm (23.6 in)

Natural History

  • Appearance: Bar jacks have silver elongated bodies like the horse eye jack. However, they have smaller eyes and a tapered snout. Also, they have a dark horizontal bar that runs down their body to the back of their tail which gives them the name bar jack.
  • Related to: trevallies and jacks, Family Carangidae
  • Behaviour: These fish are found either solitary or in groups. As voracious and opportunistic predators, they follow bottom feeders such as stingrays or eels to find food hidden in the substrate. Juveniles will help clean parasites off other fish whereas adults get cleaned commonly by the bluehead wrasse and the Spanish hogfish.

Least Concern

Conservation Status

Though harvesting might affect local populations of the bar jack, it does not seem to affect their global population size. Because there are currently no detected major threats, it is considered Least Concern.

Interesting Facts

  • Also known as the silver jack
  • They are known by another Latin name: Carangoides ruber