Nesiarchus nasutus

Nesiarchus nasutus
Not evaluated (IUCN 3.1)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Gempylidae
Genus: Nesiarchus
J. Y. Johnson, 1862
Species: N. nasutus
Binomial name
Nesiarchus nasutus
J. Y. Johnson, 1862
  • Prometheus paradoxus Capello, 1867
  • Thyrsitops violaceus T. H. Bean, 1887
  • Bipinnula violacea (T. H. Bean, 1887)
  • Escolar violaceus (T. H. Bean, 1887)

Nesiarchus nasutus, the Black gemfish, 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.[1] That genus is thus considered monotypic.


  1. Froese, Rainer and Pauly, Daniel, eds. (2013). "Nesiarchus nasutus" in FishBase. April 2013 version.
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