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Species: Alopias superciliosus, Bigeye thresher, Bigeye thresher shark

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flat between eyes
eye very large, high
nape: deep groove
D1 near level pelvic

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Alopias superciliosus (Lowe, 1841)

Bigeye thresher shark

Body stout, cylindrical; head short, flat between eyes; deep V-shaped horizontal groove on each side of head from behind eye to over gill slits; eyes very large, dorsal; snout long, bulbous, conical; mouth small, ventral; teeth long, awl-like; gill openings - 5, short, last 2 over pectoral base; first dorsal large, its base ending just before pelvic origin; second dorsal and anal very small; pectorals very long, narrow, curved, broad tip; pelvics large; upper lobe of tail extremely long, ~ equal to body length; no keels on tail base.

Back purplish grey; belly cream, that color not extending onto flank over pectoral fin.

Size: 484 cm; reaches 25 years

Habitat: oceanic, pelagic.

Depth: 0-723 m.

Circumtropical; probably throughout our region.

  


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Salinity
  • Marine
  • Marine Only
Inshore/Offshore
  • Offshore Only
  • Offshore
Water Column Position
  • Water column only
  • Mid Water
  • Near Surface
  • Surface
Habitat
  • Water column
FishBase Habitat
  • Pelagic
Feeding Group
  • Carnivore
  • Data
Diet
  • Octopus/squid/cuttlefish
  • Bony fishes
Egg Type
  • Live birth
  • No pelagic larva
  • Data
Global Endemism
  • Greater Caribbean non-endemic
  • Circumtropical ( Indian + Pacific + Atlantic Oceans)
Regional Endemism
  • GC non-endemic
  • Extends North of GC
  • Also in Brazil
  • Extends South of GC
  • Continent
  • Island (s)
  • Continent + Island (s)
  • Extends N + S of GC
Residency
  • Resident
Climate Zone
  • Tropical (10-23N, Nicaragua / Cuba)
  • Temperate (>35N)
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
IUCN Red List
  • Listed
  • Vulnerable
CITES
  • Not listed
Depth Range Max
  • 723
Depth Range Min
  • 10
Length Max
  • 484