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Species: Tetronarce occidentalis, Western Atlantic Torpedo

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disc ~ circular, front straight
snout short
small eyes
D1 base extends past pelvic base
C triangular
uniform dark

Tetronarce occidentalis (Storer, 1843)

Western Atlantic Torpedo

Disc circular, smooth, broad, front ~straight, thick at front and center, relatively soft and fleshy, thinner on and behind sides; snout very short (7.1-7.5% TL before eyes); eyes and spiracles very small, with smooth edges (no papillae); two large, kidney shaped electric organs on sides of head; mouth moderate sized, with longitudinal grooves at sides, lips not cartilaginous and tubular; pectorals very thick at edges; tail thick, blending into trunk, shorter than disc; two dorsal fins, first larger, base of first dorsal extends to rear past base of pelvic fin; tail fin large, triangular; skin smooth and spineless.

Upper body dark brown to purplish brown;; lower surface white, with darker disc edges.

Reaches 154 cm; 60 Kg.

Benthic on soft and mud bottoms; adults may be pelagic or semi-pelagic.

Depth range: 0-540 m, normally at about 50-100 m.

West Atlantic; Nova Scotia to the Amazon.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom + water column
  • Mid Water
  • Near Bottom
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Water column
  • Mud
FishBase Habitat
  • Bentho-Pelagic
Feeding Group
  • Carnivore
  • Data
  • Data
  • Sharks/rays
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
  • Octopus/squid/cuttlefish
Egg Type
  • Data
  • Live birth
  • No pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent + Island (s)
  • Extends N + S of GC
  • Extends North of GC
  • Extends South of GC
  • GC non-endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Temperate (>35N)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Data deficient
  • Listed
  • Not listed
Length Max
  • 154
Depth Range Min
  • 0
Depth Range Max
  • 540