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Species: Odontognathus mucronatus, Guiana longfin herring

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belly keel - gap under pectoral base
A 70-85

Odontognathus mucronatus Lacepede, 1800

Guiana longfin herring

Body elongate, very compressed; top of head concave; mouth small, directed up, lower jaw projecting; upper jaw long, extending to or past gill opening; very small dorsal fin, behind mid-body; anal fin base very long (70-85 rays), its origin well before dorsal; pectorals large, low on the side just behind the head; no fin spines; no pelvic fins; a forked tail fin; a convex keel on belly formed by 7-8 scutes (spiny scales) before the pectoral, a gap under pectoral base, and 12-13 scutes behind it, outer edges of scutes smooth, not serrated.

Body yellowish white with thin white midlateral stripe; head silvery; midline of head and back dark; anal fin dark, other fins clear to white.

Reaches 17.5 cm.

Lives in shallow coastal waters over mud and sand bottoms; common in estuaries and ascends rivers.

Depth: 0-40 m.

Venezuela to southern Brazil.


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Salinity
  • Marine
  • Brackish
  • Freshwater
Inshore/Offshore
  • Inshore Only
  • Inshore
Water Column Position
  • Water column only
  • Near Surface
  • Mid Water
  • Surface
Habitat
  • Estuary
  • Water column
  • Freshwater
FishBase Habitat
  • Pelagic
Feeding Group
  • Carnivore
  • Planktivore
  • No Data
Diet
  • Zooplankton
  • Bony fishes
Egg Type
  • Pelagic
  • Pelagic larva
  • No data
Global Endemism
  • West Atlantic Endemic
  • Greater Caribbean non-endemic
Regional Endemism
  • Continent
  • GC non-endemic
  • Also in Brazil
  • Extends South of GC
  • Continent only
Residency
  • Resident
Climate Zone
  • Tropical (10-23N, Nicaragua / Cuba)
  • Equatorial (0-10N, Costa Rica / Venezuela)
IUCN Red List
  • Not evaluated / Listed
CITES
  • Not listed
Length Max
  • 17.5
Depth Range Min
  • 0
Depth Range Max
  • 40