Shorefishes of the Eastern Pacific online information system

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Species: Euleptorhamphus viridis, Ribbon halfbeak

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body = very compressed ribbon
beak (lower jaw) very long
pectoral very long (~ 1/4 SL)



Euleptorhamphus viridis (Van Hasselt, 1823)

Ribbon halfbeak

Body extremely elongate, compressed, ribbon-like, he greatest depth 16.1-23.5 in SL;  upper jaw short and triangular, lower jaw very long, its length 2.2-2.7 in SL; jaw teeth in bands, weak, 3-pointed on lower jaw; teeth on roof of mouth and tongue; 25-32 gill rakers;dorsal rays 20-25; anal rays 20-25, its origin behind dorsal origin; pectoral rays 8, very long (> ¼ SL); dorsal and anal fins with slightly raised front lobes, origins opposite; tail deeply forked, lower lobe larger;  scales large and smooth.

Silvery on sides, bluish or greenish above; fins unpigmented.

Size: grows to 53 cm.

Habitat: surface pelagic.

Depth: 0-5 m?

Tropical and temperate seas of the Indo-Pacific; in the eastern Pacific from nothern Baja California to Ecuador and the oceanic islands.

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  • Marine Only
  • Marine
  • Offshore Only
  • Offshore
Water Column Position
  • Surface
  • Water column only
  • Water column
FishBase Habitat
  • Pelagic
Feeding Group
  • No Data
  • Planktivore
  • No Data
  • Zooplankton
Egg Type
  • Pelagic
  • No data
  • Pelagic larva
Global Endemism
  • TEP non-endemic
  • "Transpacific" (East + Central &/or West Pacific)
  • All species
  • All Pacific (West + Central + East)
  • Indo-Pacific only (Indian + Pacific Oceans)
Regional Endemism
  • Tropical Eastern Pacific (TEP) non-endemic
  • Island (s)
  • Continent + Island (s)
  • Continent
  • Eastern Pacific non-endemic
  • All species
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • South Temperate (Peruvian Province )
  • North Temperate (Californian Province &/or Northern Gulf of California)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 53
Depth Range Min
  • 0
Depth Range Max
  • 5