any of various soft-finned deep-sea teleost fishes, esp Regalecus glesne (see oarfish), that have an elongated compressed body. They are related to the opah and dealfishes
ribbonfish in American English
(ˈrɪbənˌfɪʃ)
nounWord forms: pluralˈribbonˌfish or ˈribbonˌfishes
any of a family (Trachipteridae, order Lampriformes) of elongated, marine bony fishes having a ribbonlike, compressed body