Shorefishes of the Greater Caribbean online information system

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Species: Centroscymnus owstonii, Roughskin Dogfish, Roughskin Dogfish Shark

All Families:   All Genera:   All Species:

snout > / = mouth width
both Ds: exposed short spines
D2 higher; D1 long, low, low ridge at front
flank denticles large, round, +/- rear points
top teeth needles, bottom teeth blades + oblique tips
pectoral tips end well before D1 spine
belly: with side ridges

Centroscymnus owstonii Garman, 1906

Roughskin Dogfish, Roughskin Dogfish Shark

Body cylindrical, fusiform, not tapering from shoulders; eyes on side of head, without nictitating membranes; spiracles large, just behind eyes; snout moderately long, flattened, rounded from above, length before mouth ~ distance between center of mouth & level of 1st gill slit, and ~equal to mouth width; mouth short, nearly transverse; lips thick and fleshy; top teeth narrow, elongate, sharp, with a single point; bottom teeth large, blade-like, interlocking, with low, oblique points; gill slits 5, all before pectoral fin; 2 dorsal fins, each with a small, grooved, usually protruding spine; 2nd dorsal higher & more triangular than 1st, 1st low, lobe-like, with base extending forwards as a low, inconspicuous ridge; origin of 1st dorsal well behind pectoral fin base, nearer pectoral base than pelvic base; no anal fin; pectorals with short, broadly rounded free rear tips that end well before 1st dorsal spine; tail fin strongly asymmetrical, upper lobe with deep notch under tip, lower lobe short but well developed; no keels or pits before base of tail fin; abdomen with side ridges; denticles above gill slits large, with low, oval, ridged, 3 pointed crowns, flank denticles of juveniles similar, of adults flat, smooth, oval; cloaca without a luminous gland.

Uniform dark brown to black

Reaches 120 cm.

Depth range 150-1459 m


All three oceans: the Gulf of Mexico and southern Brazil

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  • Marine
  • Marine Only
  • Inshore Only
  • Offshore Only
Water Column Position
  • Bottom
  • Bottom + water column
  • Mid Water
  • Near Bottom
  • Water column
FishBase Habitat
  • Bentho-Pelagic
Feeding Group
  • Carnivore
  • Data
  • Data
  • Bony fishes
  • Octopus/squid/cuttlefish
Egg Type
  • Data
  • Live birth
  • No pelagic larva
Global Endemism
  • All species
  • Circumtropical ( Indian + Pacific + Atlantic Oceans)
  • Greater Caribbean non-endemic
Regional Endemism
  • Also in Brazil
  • Continent
  • Continent only
  • Extends South of GC
  • GC non-endemic
  • All species
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
IUCN Red List
  • Listed
  • Vulnerable
  • Not listed
Length Max
  • 120
Depth Range Min
  • 150
Depth Range Max
  • 1459