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NEFSC Apex Predators Program

finetooth shark Finetooth shark © George Burgess

FINETOOTH SHARK

Carcharhinus isodon

SIZE

To about 6 ft (1.8 m).

DISTINGUISHING CHARACTERISTICS

  • Snout pointed, shorter than width of mouth; gill slits long
  • Fins unmarked, pectoral fin undersides pure white
  • First dorsal fin originating behind insertion of pectoral fins along inner margin
  • Color bluish-gray above, white below
  • Teeth slender, erect, smooth or irregularly serrated; similar in both jaws
  • No interdorsal ridge

DISTRIBUTION

New York to Florida, including Gulf of Mexico and Cuba. Rare north of North Carolina.

HABITAT

Coastal; inshore shallow waters <20 ft (6 m).

SIMILAR SPECIES

Atlantic sharpnose shark has white spots on back and sides, second dorsal fin originating over or behind middle of anal fins. Blacktip shark and spinner shark have black-tipped fins. Blacknose shark has dusky blotch on tip of snout, yellow-green color.

MORE INFORMATION

Ichthyology at the Florida Museum of Natural History


Guide to Sharks, Tunas, & Billfishes of the U.S. Atlantic and Gulf of Mexico.

Text descriptions taken from:
Guide to Sharks, Tunas, & Billfishes
of the U.S. Atlantic and Gulf of Mexico

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(File Modified Aug. 08 2017)