Species: Seriola rivoliana, Almaco jack, Almaco Jack Amberjack

oblique bar: eye to D1

Seriola rivoliana Valenciennes in Cuvier & Valenciennes, 1833
Almaco jack
Body elongate, fusiform, relatively deep, compressed; upper head & body profile distinctly more convex that lower profile; snout long, pointed; mouth ends under center of pupil, supramaxilla bone above rear of top jawbone very wide at rear, with sharp angle at top corner; gill rakers (excluding rudiments) 24-29 in small fish, 18-25 in large; dorsal fin with VII-VIII spines (front spines may be imbedded in very large fish), then a notch before I, 27-33; anal fin II isolated spines (reduced or embedded in large fish) + I, 18-22, its base much shorter than soft dorsal base; front rays of dorsal and anal fins elongate, in a curved point, 2nd dorsal lobe height 16-25% of fork length; no finlets after 2nd dorsal and anal fins; pectoral short (< head length); tail base slender, with grooves on dorsal and ventral surface of tail fin base, but no lateral fleshy keel; tail strongly forked; lateral line with slight arch over pectoral region; no scutes (hard spiny scales) on lateral line.
Bluish to greenish on upper back, silvery below; oblique dark band from snout to front of dorsal fin; juveniles (up to 20 cm) with oblique dark bar on head and 7 dark bars (each with a narrow, irregular pale vertical centerline) on side and tail base that do not extend onto dorsal and anal fin bases.
Size: attains at least 160 cm, common to 60 cm; at least 60 kg.
Habitat: demersal and pelagic, mainly oceanic.
Depth: 3-340 m.
Circumtropical; Cape Cod to Argentina.

High Resolution Map Download
- Salinity
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- Marine
- Marine Only
- Inshore/Offshore
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- In & Offshore
- Inshore
- Offshore
- Water Column Position
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- Bottom
- Bottom + water column
- Mid Water
- Near Bottom
- Near Surface
- Habitat
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- Water column
- Reef associated (reef + edges-water column & soft bottom)
- FishBase Habitat
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- Reef Associated
- Bentho-Pelagic
- Feeding Group
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- Carnivore
- Data
- Diet
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- Octopus/squid/cuttlefish
- Mobile benthic crustacea (shrimps/crabs)
- Data
- Bony fishes
- Egg Type
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- Data
- Pelagic
- Pelagic larva
- Global Endemism
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- Greater Caribbean non-endemic
- All species.
- Circumtropical ( Indian + Pacific + Atlantic Oceans)
- Regional Endemism
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- Extends North of GC
- Island (s)
- Extends South of GC
- GC non-endemic
- Extends N + S of GC
- All species..
- Also in Brazil
- Continent
- Continent + Island (s)
- Residency
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- Resident
- Climate Zone
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- Subtropical (23-35N, Florida / Carolinas / Bermuda)
- Temperate (>35N)
- Equatorial (0-10N, Costa Rica / Venezuela)
- Tropical (10-23N, Nicaragua / Cuba)
- IUCN Red List
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- Listed
- Least concern
- CITES
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- Not listed
- Length Max
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- 160
- Depth Range Min
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- 3
- Depth Range Max
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- 340