Species: Carcharhinus isodon, Finetooth Shark

Carcharhinus isodon (Müller & Henle, 1839)

Finetooth Shark

Body relatively slender; eyes large, round, nictitating eyelids present; snout pointed, length before mouth < mouth width, ~1.1-1.3 time width between nostrils; anterior nasal flaps very reduced; upper lip furrows short, not very noticeable; top and bottom teeth nearly symmetrical, with non-oblique narrow points, lower teeth smooth, upper teeth weakly and irregularly serrated; 12-16 rows of teeth on side of top jaw; spiracle absent; gill slits very long (3rd slit longest, > height of anal fin), last two over pectoral, no papillae; first dorsal relatively small, front margin a little convex, rear margin concave, its origin over or just behind free rear tip of pectoral fin; second dorsal relatively large, with slightly concave rear margin, its origin over or slightly behind that of the anal fin; anal fin with deeply notched rear margin; pectoral fins small, narrow, with angular front edge; no ridge on top of body between dorsal fins; 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.

Blue-grey on top, greyish on sides, white below, white band on sides, fins unmarked.

Size: 160 cm, possibly 200 cm.

Habitat: an inshore shark.

Depth: 0-40 m.

The central eastern United States to Brazil.