Shorefishes of the Eastern Pacific online information system

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Species: Caranx melampygus, Bluefin trevally, Bluefin crevalle-jack

All Families:   All Genera:   All Species:

deep, oblong
head angular
blue + black dots
D, A & C: blue

Caranx melampygus Cuvier in Cuvier & Valenciennes, 1833

Bluefin trevally, Bluefin crevalle-jack

Body deep, compressed; head profile angular; adipose eyelid not well developed; 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) 5-9 + 17-21; margin of body at rear of gill chamber without papillae; pectoral fins longer than head; dorsal rays VIII + I, 21-24; anal rays II + I, 17-20; dorsal and anal fin with long front lobes; dorsal and anal fins not followed by finlets; lateral line with a pronounced anterior arch, straight part with 27-42 strong scutes; breast completely scaled.

Head and dorsal half of body brassy, suffused with blue and covered with small blue-black spots (forming at about 20 cm length and increasing in number with size); second dorsal, anal, and caudal fins electric blue; pectoral fins of juveniles yellow.

Maximum size to 100 cm; at least 10.8 kg.

Habitat: solitary or in small schools near reefs. Juveniles sometimes in estuaries.

Depth: 0-230 m.

Indo-Pacific from East Africa to the Americas; the tip of Baja and the mouth of the Gulf of California; Costa Rica to Ecuador and the offshore islands.

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  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom + water column
  • Bottom
  • Near Bottom
  • Mid Water
  • Reef (rock/coral/oyster)
  • Rocks
  • Corals
  • Reef associated (reef + edges-water column & soft bottom)
  • Water column
FishBase Habitat
  • Reef Associated
Feeding Group
  • Data
  • Carnivore
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
  • Data
Egg Type
  • Pelagic
  • Pelagic larva
  • No data
Global Endemism
  • All Pacific (West + Central + East)
  • TEP non-endemic
  • All species
  • "Transpacific" (East + Central &/or West Pacific)
  • Indo-Pacific only (Indian + Pacific Oceans)
Regional Endemism
  • Tropical Eastern Pacific (TEP) non-endemic
  • All species
  • Island (s)
  • Continent
  • Continent + Island (s)
  • Eastern Pacific non-endemic
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Depth Range Max
  • 230
Depth Range Min
  • 0
Length Max
  • 100