Species: Gnathanodon speciosus, Golden Trevally, Golden Jack

adults - no teeth
Gnathanodon speciosus (Forsskål, 1775)
Golden Trevally, Golden Jack
Body deep, moderately compressed; adults without teeth (juveniles with a few weak teeth on lower jaw); lips notably fat and fleshy; gill rakers (including rudiments) 19-22 + 27-30; dorsal rays VII+I, 18-20; anal rays II+I, 15-17; no finlets after 2nd dorsal and anal fins; pectoral fins longer than head; tail base slender; tail strongly forked; lateral line moderately arched, straight part with 17-24 scales followed by 17-26 scutes; body and breast covered with scales.
Silver grey, yellowish on belly, often with scattered black patches or spots on sides; all fins yellow; tips of tail black; juveniles and young adults with 7-11 black bars on body.
Size: to 120 cm.
Habitat: demersal on soft bottoms. Young act as "pilots" for sharks and other large fishes.
Depth: 0-80 m.
Tropical Indo-Pacific from east Africa to the Americas; has been collected in the locks at the Atlantic entrance to the Panama Canal, and one caught at Cuba.
Note: The Cuban record likely is due to an aquarium release at Florida.

High Resolution Map Download
- Salinity
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- Brackish
- Freshwater
- Marine
- Inshore/Offshore
-
- Inshore
- Inshore Only
- Water Column Position
-
- Bottom
- Bottom + water column
- Mid Water
- Near Bottom
- Habitat
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- Sand & gravel
- Water column
- Beach
- Estuary
- Freshwater
- Reef associated (reef + edges-water column & soft bottom)
- FishBase Habitat
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- Demersal
- Feeding Group
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- Carnivore
- Data
- Diet
-
- Data
- Bony fishes
- Mobile benthic crustacea (shrimps/crabs)
- Mobile benthic gastropods/bivalves
- Mobile benthic worms
- Octopus/squid/cuttlefish
- Egg Type
-
- Data
- Pelagic
- Pelagic larva
- Global Endemism
-
- All species
- Exotic (Introduced)
- Greater Caribbean non-endemic
- Regional Endemism
-
- Continent
- Continent + Island (s)
- Exotic (Introduced)
- GC non-endemic
- Island (s)
- All species
- Residency
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- Vagrant
- Climate Zone
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- Equatorial (0-10N, Costa Rica / Venezuela)
- Tropical (10-23N, Nicaragua / Cuba)
- IUCN Red List
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- Least concern
- Listed
- CITES
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- Not listed
- Length Max
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- 120
- Depth Range Min
-
- 0
- Depth Range Max
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- 80