Longfin African conger

The Longfin African conger, Conger cinereus, is a conger of the family Congridae, found in the Indo-Pacific oceans from the Red Sea and East Africa to the Marquesas and Easter islands, north to southern Japan and the Ogasawara Islands, south to northern Australia and Lord Howe Island, at depths down to 262.46 ft (80 m). Length is up to 4.27 ft (1.3 m).

The Longfin African conger has flanges on the upper and lower lips which are well developed, and two rows of teeth in each jaw, those of the outer row larger, closely set and compressed to form a cutting edge. The dorsal fin begins over the middle of a pectoral fin. It is a solitary species common on reef flats and seagrass beds of shallow lagoons but ranges to depths of 262.46 ft (80 m) on outer reef slopes. It is also found in estuaries. It feeds on fish and crustaceans at night, assuming a pattern of broad dark grey bars.

Its coloration is brownish grey, with yellow below and on its fins. The median fins have a narrow black edge; there is a black patch on lower rear edge of eye and on pectoral fins. The Longfin African conger assumes a pattern of broad dark bands at night.