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Species: Deania profundorum, Arrowhead dogfish shark

All Families:   All Genera:   All Species:

snout v long, flat
D1 short, high, origin over inner pectoral margin
D2 shorter, higher & longer spine
denticle crown: ~0.25 mmm long
under tail base: keel

Deania profundorum (Smith & Radcliffe, 1912)

Arrowhead dogfish shark

Body slender; snout extremely long, broad, flat, like a spatula, length before mouth > 1/2 head length; no nictitating eyelids; eyes huge, green to yellow; spiracles present, large, just behind eye; lip furrows long; upper & teeth blade-like, without secondary cusplets; upper teeth with erect, triangular cusps, narrower bases;  lower teeth much larger than upper teeth, overlapping, broad bases, oblique cusps; filas de dientes: 26-31 superiores, 26-30 inferiores; five gill slits, all before pectoral fin; two dorsal fins with large grooved spines, 2nd fin spine much larger ; 1st dorsal short and high, origin over inner margins of pectorals, distance from origin of spine to free rear tip slightly >  free rear tip to 2nd dorsal spine; 2nd dorsal higher & shorter than 1st; pectoral free rear tips narrow, angular to round, not elongated; no anal fin; tail base with a keel along ventral edge; tail fin strongly asymmetrical, upper lobe with strong notch under tip; skin surface very rough, skin denticles relatively small, ~erect, narrow star-shaped bases, tips on a long stalk, like 3-pointed pitchforks; denticles on flank small, crown length ~0.25 mm; lower edge of tail base between pelvics and tail fin with a keel.

Uniform dark grey to dark brown; fins dusky.

Reaches 104 cm

On and over the bottom in deep water

Depth range 275-1785 m

All 3 oceans; Virginia to the SE Caribbean (Dominica)


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Salinity
  • Marine
  • Marine Only
Inshore/Offshore
  • Offshore
  • Offshore Only
Water Column Position
  • Mid Water
  • Bottom
  • Bottom + water column
  • Near Bottom
Habitat
  • Mud
  • Sand & gravel
  • Water column
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Bentho-Pelagic
Feeding Group
  • Carnivore
  • Data
Diet
  • Mobile benthic crustacea (shrimps/crabs)
  • Octopus/squid/cuttlefish
  • Data
  • Bony fishes
Egg Type
  • Live birth
  • Data
Global Endemism
  • Greater Caribbean non-endemic
  • Circumtropical ( Indian + Pacific + Atlantic Oceans)
Regional Endemism
  • GC non-endemic
  • Continent
  • Continent + Island (s)
  • Insular primarily
  • Island (s)
  • Extends North of GC
Residency
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Temperate (>35N)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Listed
  • Least concern
CITES
  • Not listed
Length Max
  • 104
Depth Range Min
  • 275
Depth Range Max
  • 1785