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Species: Dasyatis longus, Longtail stingray

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thorns blunt, 1 row on back
tail = 2x disc
upper & lower tail folds low and long

Dasyatis longus (Garman, 1880)

Longtail stingray

Disc oval, broader than long; front-side margins of disc nearly straight; snout bluntly angular, but not protruding; tail very long and slender, more than twice length of disc; tail fin absent, but low fin folds above and below tail, that below is lower and longer; a central row of blunt thorns extending from head to shoulder girdle, two additional thorns much farther back and 1-2 thorns on each shoulder, skin otherwise smooth.

Generally dark brown to nearly blackish without distinctive marks.

Size: attains a TL of at least 257 cm (disc width 117 cm).

Inhabits sand-mud bottoms, common in estuaries.

Depth: to at least 100 m.

The Gulf of California to northern Peru.

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  • Brackish
  • Marine
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
  • Bottom only
  • Sand & gravel
  • Mud
  • Reef associated (reef + edges-water column & soft bottom)
  • Soft bottom only
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • No Data
  • Mobile benthic worms
  • No Data
  • Mobile benthic gastropods/bivalves
  • Mobile benthic crustacea (shrimps/crabs)
  • Bony fishes
Egg Type
  • No pelagic larva
  • No pelagic phase
  • No data
  • Live birth
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • All species
  • East Pacific endemic
Regional Endemism
  • All species
  • TEP endemic
  • Continent
  • Island (s)
  • Continent + Island (s)
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • North Temperate (Californian Province &/or Northern Gulf of California)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 257
Depth Range Min
  • 0
Depth Range Max
  • 100