Lepidocybium

Lepidocybium is a monotypic genus of ray-finned fish in the family Gempylidae, the escolars and snake mackerels. The only known species in this genus is Lepidocybium flavobrunneum, commonly known as the longfin escolar. This species is found in tropical and warm-temperate waters of the Atlantic, Indian, and Pacific Oceans. It is a pelagic and oceanic species, typically inhabiting depths ranging from 200 to 800 meters. The longfin escolar is characterized by its elongated, compressed body, large eyes, and the distinctive long dorsal and anal fins that give it its common name. Its coloration is generally a dark brown or black.

Lepidocybium flavobrunneum is a predatory fish, feeding on other fish, squid, and crustaceans. It is a relatively large species, capable of reaching lengths of up to 1.5 meters, though specimens of this size are rarely encountered. The longfin escolar is not a commercially significant species, but it is occasionally caught as bycatch in fisheries targeting other pelagic species. Consumption of this fish has been associated with a gastrointestinal disorder known as keriorrhea, which is caused by the presence of wax esters in its flesh. These esters are poorly digested by humans, leading to oily stools and abdominal discomfort. Due to this, it is often advised to consume Lepidocybium flavobrunneum in moderation.