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Species: Cynoscion jamaicensis, Jamaica Weakfish

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faint streaks along scale rows above LL
D2 23-27, lower 1/2 scaled
C straight/doubly concave
inner lower teeth: rear larger, widely spaced
lower jaw not to under rear edge eye
gill rakers 9-13
pectoral 16-17, > pelvic
pectoral & anal yellowish
body scales rough, = / > LL scales

Cynoscion jamaicensis (Vaillant & Bocourt, 1883)

Jamaica Weakfish

Elongate, fusiform, compressed, oval cross-section; head low, not spongy on top; eye moderate; mouth large, oblique, lower jaw slightly projecting; teeth in multiple rows with 1-2 large canines at tip of upper jaw, lower jaw with square end, not reaching under rear edge of eye; lower jaw with widely spaced teeth, larger at rear of jaw; gill rakers long and slender, 9-13; no pores or barbels on chin; 2 pores on side of snout; margin of preopercle smooth; top corner of gill opening notched; dorsal rays X + I, 23-27; anal rays II, small (< ½ length of 1st ray) weak spines, 8-10; pectoral fins > pelvic fins, usually 16-17; rear margin of tail doubly concave to straight in adult; scales rough on body, smooth on head; body scales equal to or larger than lateral line scales; lower 1/2 of soft dorsal covered with small scales; lateral line arched anteriorly and straight well before level of anus, extends to the center of the end of the tail fin.

Body silver; faint dark streaks along scale rows above lateral line; pectoral base and upper rays dark; lower parts of pectoral, pelvic and anal fins yellowish; inside opercle dark, visible externally.

Size: reaches 50 cm.

Inhabits sand and mud bottoms of coastal waters, juveniles in estuaries.

Depth: 1-120 m.

Hispaniola to Suriname.

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  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
  • Estuary
  • Mud
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Data
  • Data
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Data
  • Pelagic
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Also in Brazil
  • Continent
  • Continent + Island (s)
  • Extends South of GC
  • GC non-endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 50
Depth Range Min
  • 1
Depth Range Max
  • 120