Also known as Black Ruff, Blackfish.
Found singly or in small schools, over deep oceanic waters.
They feed on large pelagic crustaceans, small fish, plankton and squid.
Juveniles found on surface waters, often associated with pelagic medusas and salps.
Length - 150cm
Depth - 40-1000m
Medusafish is the only member of the genus Centrolophus. Ref: http://www.fishbase.org/summary/249