Genus: Centroscyllium, Shark-dogfish, Dogfish Sharks, Combtooth Dogfish Shark

D2 larger & larger spine than D1

CENTROSCYLLIUM
DOGFISH SHARKS
Snout flattened; nasal flaps short, no barbels; lips thin, not suctorial; teeth alike on both jaws, with slender central cusps with a slightly smaller cusp on each side; both dorsal fins with strong, grooved spines; 2nd dorsal fin larger than 1st, its base <2X 1st dorsal base, & with much larger spine; 1st dorsal origin over or behind inner pectoral margin, varies from closer to pectoral to closer to pelvic base; 2nd dorsal origin variable position above the pelvics; pectoral fins with short, rounded free rear tips; no anal fin; tail fin with long top lobe with weak subterminal notch, weakly developed lower lobe; tail base without pits above and below and without keels
Deepwater sharks in all three oceans; with 7 species, the only Atlantic species in the Greater Caribbean.