Shorefishes of the Eastern Pacific online information system

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Species: Caranx caballus, Green jack

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fins pale
edge operculum: black spot

Caranx caballus Günther, 1868

Green jack

Body moderately compressed, relatively slender; eye with well developed transparent eyelid; top jaw with an outer row of canines and an inner band of fine teeth; lower jaw with one row of teeth; gill rakers (excluding rudiments) 13-15 + 28-30; margin of body at rear of gill chamber without papillae; pectoral fins longer than head; dorsal rays VIII + I, 22-25; anal rays II + I, 18-21; dorsal and anal fins not followed by finlets; lateral line with a pronounced, but short anterior arch; scales on straight part of lateral line 0-7, followed by 45-56 strong scutes; breast completely scaled .

Light olive to dark bluish green on back, silvery grey to golden below; fins pale;  black spot on gill cover; juveniles with about 7 dark bars on body.

Size: grows to at least 70 cm.

Habitat: a common, schooling species over soft bottoms.

Depth: 0-100 m.

Southern California to Chile, and all the offshore islands; occasionally recorded in abundance at Hawaii but not established there.

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  • Marine
  • Brackish
  • Freshwater
  • Inshore Only
  • Inshore
Water Column Position
  • Mid Water
  • Bottom + water column
  • Bottom
  • Near Bottom
  • Water column
  • Freshwater
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Estuary
  • Sand & gravel
  • Beach
FishBase Habitat
  • Pelagic
Feeding Group
  • Carnivore
  • Data
  • Bony fishes
  • Octopus/squid/cuttlefish
  • Mobile benthic crustacea (shrimps/crabs)
  • Data
Egg Type
  • Pelagic
  • Pelagic larva
  • No data
Global Endemism
  • East Pacific endemic
  • All species
  • "Transpacific" (East + Central &/or West Pacific)
  • Tropical Eastern Pacific (TEP) endemic
  • Central + East Pacific (but not West)
Regional Endemism
  • Continent + Island (s)
  • TEP endemic
  • All species
  • Island (s)
  • Continent
  • Resident
Climate Zone
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • South Temperate (Peruvian Province )
  • North Temperate (Californian Province &/or Northern Gulf of California)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Depth Range Max
  • 100
Depth Range Min
  • 0
Length Max
  • 70