a large soft-finned deep-sea teleost fish, Lampris regius (or luna), of the Atlantic and Pacific Oceans and the Mediterranean Sea, having a deep, brilliantly coloured body: family Lampridae
Also called: moonfish, kingfish
Word origin
C18: of West African origin
opah in American English
(ˈoʊpə)
noun
a very large, brightly colored, silvery, marine bony fish (Lampris guttatus, order Lampriformes)