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Commonly Asked Questions

Appears in Georgia Aquarium's:
  • Ocean Voyager

Range / Habitat

  • Occurs in the Western Atlantic from Nova Scotia to Brazil; the Bahamas, the Gulf of Mexico and throughout the Caribbean, including the Antilles. 
  • In the Eastern Atlantic it ranges from Senegal to Angola, including the western Mediterranean, St. Paul's Rocks and Ascension Island. 
  • Found not far from the coast in water depths from near-surface to 330 feet (100 m).  
  • Juvenile associates with floating seaweed (Sargassum).

Physical Characteristics

  • The coloration of the blue runner is variable. It can be dark black, bluish-green or olive green on the back and dark gray to golden to silvery on the belly. 
  • Has a conspicuous black spot on the upper edge of the gill cover (operculum).  
  • Average length of 12 inches (30 cm) or less. Maximum lengths of 28 inches (70 cm) and weigh 11 lbs. (5 kg).

Diet / Feeding

  • Diet consists of fish, shrimp, and other invertebrates.

Reproduction / Growth

  • Spawns offshore from January through August.
  • Eggs are pelagic - dispersed in open ocean.

Conservation Status

  • “Not Evaluated” on the IUCN Red List.

Additional Information

  • Schooling species.
  • Member of the jack family, Carangidae, and is very similar to the green jack, C. caballus, that occurs in the eastern Pacific.
  • Congregates around oil platforms in the Gulf of Mexico in numbers reaching the tens of thousands.
  • Important forage species for larger predators such as barracuda, cobia, king mackerel, billfish and tuna.
  • Often used by sport fishermen as bait for catching large predator species with rod and reel.


McClane’s Field Guide to Saltwater Fishes of North America. McClane, A. J., pg. 224
Angler’s Guide to Fishes of the Gulf of Mexico. Horst, J.; Lane, M. and Raver, D., pgs. 196-197.