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Species: Squalus clarkae, Shortspine dogfish, Shortspine spurdog shark

All Families:   All Genera:   All Species:

slender
head and snout broad
D1 spine short, origin over pectoral base
D2 small
D tips and notch of C dusky
edges of pectoral, pelvic and C white
pectoral rear edge weakly concave, free tip blunt point
flank denticles - 3 points

Squalus clarkae Pfleger, Grubbs, Cotton & Daly-Engel, 2018

Gulf dogfish

Body elongate and narrow; head and long snout broadly pointed; eyes without nictitating membrane; moderate sized spiracle just behind eye; anterior nasal flap moderately wide, notched; distance before eyes < distance between eyes; distance from tip of snout to inner corner of nostril about same as distance from inner corner of nostril to groove in top lip; teeth similar in both jaws, small, compressed, blade-like, a single deeply notched tip; 5 gill slits, all before pectorals; a strong spine at front of both dorsal fins, that of 1st dorsal stout and short, origin over pectoral inner margin; first dorsal with short, stout spine, origin over/just behind pectoral base, second dorsal much smaller than first; pectoral broad, free rear tip narrowly rounded, posterior margin slightly concave; upper tail base pit well developed, no lower pit; tail fin without notch under tip; skin denticles on flanks broad, with 3 points and a strong central ridge.

Grey to grey-brown above, light grey to whitish below no white makes on sides; dorsal fin tips dusky; pectoral, pelvic and tail fins with white rear edges; tail rear edge with a dark bar above the notch.

Size: 72 cm.

Habitat: continental shelves and upper slopes, ridges and seamounts; on or near the bottom.

Depth: 242-613 m.

N Carolina to the Gulf of Mexico.


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Salinity
  • Marine Only
  • Marine
Inshore/Offshore
  • Inshore
  • Inshore Only
Water Column Position
  • Near Bottom
  • Bottom
  • Bottom + water column
Habitat
  • Mud
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Water column
  • Sand & gravel
FishBase Habitat
  • Bathydemersal
Feeding Group
  • Carnivore
  • Data
  • Corallivore
Diet
  • Mobile benthic worms
  • Mobile benthic crustacea (shrimps/crabs)
  • Octopus/squid/cuttlefish
  • Bony fishes
  • Pelagic jellyfish/ctenophores
  • Sponges/seasquirts/bryozoa
  • Data
  • Soft corals/hydroids
Egg Type
  • No pelagic larva
  • Live birth
  • Data
Global Endemism
  • West Atlantic Endemic
  • Greater Caribbean endemic
Regional Endemism
  • Continent only
  • Continent
  • All species
Residency
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
IUCN Red List
  • Data deficient
  • Listed
CITES
  • Not listed
Length Max
  • 72
Depth Range Min
  • 242
Depth Range Max
  • 613