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Species: Carcharhinus acronotus, Blacknose shark

All Families:   All Genera:   All Species:

snout: tip round & black, length >/= mouth width
no ridge between Ds
D2 origin over A origin
teeth: top - narrow oblique point, strong side notch, serrated; bottom - narrow, smooth
fins not dark tipped
under pectoral pale

Carcharhinus acronotus (Poey, 1861)

Blacknose shark

Moderately stout; eyes round, moderately large, lower nictitating eyelid present; snout long, its length >/= mouth width, 1.4-1.7 times width between nostrils, thin-tipped, rounded; top teeth narrow, mostly oblique tips, coarsely serrated bases, outer edges deeply notched; lower teeth with smooth, narrow tips; only 12-13 rows of upper side teeth; spiracles absent; gill slits 5, short (3rd slit 2.4-3.2% of TL), without papillae, last two over pectoral fin; first dorsal fin relatively small, convex front edge, rear tip pointed in adults, origin over or just behind pectoral fin free rear tip; second dorsal moderately large, its origin over anal fin origin, rear margin concave; no ridge between dorsal fins; pectoral fins small, narrow; no keel on tail base; tail fin strongly asymmetrical, with well developed lower lobe, undulating ridge along dorsal surface of top lobe, and a notch under tip of that lobe.

Grey or yellowish brown above sides and belly paler to whitish, dusky blotch on tip of snout; 2nd dorsal and upper tail lobe with dark (not black) tips; underside of pectoral pale.

Size: 137 cm.

Habitat: Coastal waters over sandy, shell or coralline bottoms.

Depth: 9-64 m.

N Carolina to Brazil.


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Salinity
  • Marine
  • Marine Only
Inshore/Offshore
  • Inshore
  • Offshore
  • In & Offshore
Water Column Position
  • Bottom + water column
  • Near Bottom
  • Mid Water
  • Bottom
Habitat
  • Reef associated (reef + edges-water column & soft bottom)
  • Reef (rock/coral/oyster)
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Reef and soft bottom
  • Water column
  • Corals
  • Sand & gravel
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • Data
Diet
  • Bony fishes
Egg Type
  • Data
  • Live birth
  • No pelagic larva
Global Endemism
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Extends South of GC
  • Extends N + S of GC
  • Island (s)
  • GC non-endemic
  • Continent + Island (s)
  • Continent
  • Also in Brazil
  • Extends North of GC
Residency
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
  • Temperate (>35N)
IUCN Red List
  • Near threatened
  • Listed
CITES
  • Not listed
Length Max
  • 137
Depth Range Min
  • 9
Depth Range Max
  • 64