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Centrolophus niger (Rudderfish).gif
Drawing by Dr Tony Ayling
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Centrolophidae
Genus: Centrolophus
Lacépède, 1802
Species: C. niger
Binomial name
Centrolophus niger
(J. F. Gmelin, 1789)

The rudderfish, Centrolophus niger, is a medusafish, the only member of the genus Centrolophus. It is a mesopelagic fish found in all tropical and temperate oceans at depths of 50 to 1,000 m. Its length is typically up to 60 cm, but it may reach 150 cm.