Common names: shark (English), tiburón (Espanol)
Carcharhinus signatus (Poey, 1868)
Night shark Fr - Requin nuit Es - Tiburón de noche
Body fusiform and stout; snout long, (1.7-1.9 in the distance between nostrils), narrow, pointed; eyes large, nictitating eyelid present; nasal flap short with narrow base; mouth small; very short labial folds; upper teeth with oblique point, front edge smooth to little serrated, rear edge strongly serrated at base; lower teeth with a narrow upright point; spiracles absent; gill slits short, last two over pectoral fin base; first dorsal low, with long rear tip, front edge weakly convex, rear margin concave, origin over rear of pectoral fin margin; second dorsal very small, elongate rear tip, base over anal fin; pectoral fins long, narrow; low ridge present between dorsal fins; no keel on tail base.
Greyish blue above with scattered black spots, greyish white below; eyes green; inside mouth white.
Size: 280 cm
Coastal and semioceanic
Depth: 0 - 600 m, usually 50-100 m.
Found on both sides of the Atlantic; unconfirmed reports from the coast of Panama in the eastern Pacific.