Common names: conger (English), congrio (Espanol)
 
Japonoconger proriger (Gilbert, 1891)

Black-fin conger

Tail > 60% of TL; body depth ~ 7.5% of TL; head length equal to trunk; eye small, half length of snout, 12% of head length; snout long,  with strongly pointed soft tip overhanging mouth by 2/3 length of eye; jaws very broad and strong, curved at rear, reaching to under rear of pupil; lower lip with a low flange, to lip without a flange; conspicuous pore just behind angle of mouth; teeth simple, in bands, none enlarged an isolated patch at front before top jaws; rear nostril a slit; front nostril a short, thin tube at front of snout; dorsal and anal fins well developed, confluent with pointed tail; origin of dorsal fin before gill opening; pectorals well developed,  top of narrow base above top of gill slit; tail not attenuated, tip soft and flexible; no scales; lateral line from over gill opening to near tip of tail.

Light brown; all fins black, dorsal and anal with narrow white margin at rear; inside mouth, gill chamber and body cavity black, black of gill chamber visible through skin.

Size: to 35 cm.

Habitat: benthic on soft bottoms.

Depth: 55-735 m.

Gulf of Tehuantepec to central Peru