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Species: Dipturus oregoni, Hooktail skate, Oregon's wingedskate

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disc center no thorns
top uniform color
distance between Ds < base D1
top disc uniform; pale below
pores under snout black
tail: side thorns compressed, hooked
tail thorns: 3 rows, center - 31-48 + 1 between Ds

Dipturus oregoni (Bigelow & Schroeder, 1958)

Hooktail skate,  Oregon's wingedskate

Disc rhomboidal, with sinuous front margins, ~1.4X wider than long, rear edges gently convex; snout moderately elongate (length before eye 17-18% of TL), sharply pointed, its tip firm, with a stout cartilage; pectoral fin rays separate from snout; eyes on top of head, with spiracles immediately behind; nostrils a little in front of mouth, with front lobes from nostrils forming a curtain between them and mouth; pelvic fin with 2 distinct lobes connected by membrane, rear one large; 2 small dorsal fins at rear of tail, similar in size & shape, rounded tips, close together (~1/3 length of 1st dorsal base apart); tail narrow, 50% TL, with a pair of lateral skin folds low down, along entire length; tail fin as a long, low upper fold behind the second dorsal; top of disc free of denticles, except on snout, head and front edge of disc; ventral side with denticles under snout, besides mouth, & and in a band half way along front edge of disc;  small thorns  around eyes & along front edge of disc, no thorns along center of disc; tail with   central row of 31-48 thorns, flanked by a pair of side rows of flattened, hooked thorns, 1 thorn between dorsal fins.

Upper surface uniform brown; lower surface with disc and pelvics pale bluish, tail pale brown; mucous pores in row of 9-10 along each side of nape in inconspicuous dark dots, pores on underside of snout & before mouth black.

Reaches 144 cm

Depth range 369-1079 m

Lives on soft bottoms

SE Florida and the Gulf of Mexico.


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Salinity
  • Marine
  • Marine Only
Inshore/Offshore
  • Offshore
  • Offshore Only
Water Column Position
  • Bottom
  • Bottom only
Habitat
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Bathydemersal
Feeding Group
  • Carnivore
  • No Data
Diet
  • Mobile benthic gastropods/bivalves
  • Bony fishes
  • No Data
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • No data
  • Benthic
  • No pelagic larva
  • No pelagic phase
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent only
  • GC endemic
  • All species
Residency
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
IUCN Red List
  • Data deficient
  • Listed
CITES
  • Not listed
Length Max
  • 144
Depth Range Min
  • 369
Depth Range Max
  • 1079