king of the herring vs ribbonfish

king of the herring and ribbonfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
king of the herring	Yes	No	No	No
ribbonfish	Yes	No	No	No

As nouns, king of the herring and ribbonfish are synonyms defined as:

king of the herring and ribbonfish: thin deep-water tropical fish 20 to 30 feet long having a red dorsal fin

Other synonyms of king of the herring include oarfish, Regalecus glesne.

king of the herring (noun)	ribbonfish (noun)
thin deep-water tropical fish 20 to 30 feet long having a red dorsal fin	marine fish having a long compressed ribbonlike body
	thin deep-water tropical fish 20 to 30 feet long having a red dorsal fin