Nesiarchus nasutus

Nesiarchus nasutus, the black gemfish or violet snake mackerel, is a species of snake mackerel found in tropical and subtropical waters in most parts of the world, though not in east Pacific and north Indian waters. It occurs at depths of from 200 to 1,200 metres (660 to 3,940 ft) though they make diel vertical migrations from benthopelagic to mesopelagic depths at night. This species can reach a length of 130 centimetres (51 in) SL though most do not exceed 80 centimetres (31 in) SL. It is of minor importance to local commercial fisheries. This species is currently the only known member of its genus, Nesiarchus.^[2]

Nesiarchus nasutus
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Scombriformes
Family:	Gempylidae
Genus:	Nesiarchus
Species:	N. nasutus
Binomial name
Nesiarchus nasutus J. Y. Johnson, 1862
Synonyms
Prometheus paradoxus Capello, 1867 Thyrsitops violaceus Bean, 1887 Bipinnula violacea (Bean, 1887) Escolar violaceus (Bean, 1887)