Species: Gnathophis bathytopos, Blackgut conger

Gnathophis bathytopos Smith & Kanazawa, 1977

Blackgut conger

Head pointed; tail 60-62% of TL; snout long, overhanging, with ventral keel; eye large, well back on head; front nostril a tube pointing down and forwards, rear nostril an oval hole immediately before eye; mouth ~horizontal, top lip with narrow flange; teeth simple, conical, in bands on both jaws; length of elongate tooth patch at front roof of mouth ~1/3 that of jaw tooth bands; top of gill opening below top of pectoral fin base; pectorals well developed, base short, ends above gill opening; dorsal fin origin over or slightly behind base of pectoral fin; dorsal and anal fins with segmented rays, confluent with tail fin; tail tip slightly stiff, with small fin; lateral line complete, pores 2 and 7-13 of lateral line elevated, opening from upper side of lateral line canal, 27-37 pores before anus.