Most fisherman would consider themselves lucky to catch one elusive opah fish in their lives, but one recreational fishing boat landed three in one day this on .brBig Fishes of the World: Lucky anglers catch extremely rare OPAH fish in one day Most fisherman would consider themselves lucky to catch one elusive opah .brOpah (also known colloquially as moonfish, sunfish, kingfish, redfin ocean pan, and Jerusalem haddock) are large, colorful, deep-bodied pelagic Lampriform .brMost fisherman would consider themselves lucky to catch one elusive opah fish in their lives, but one recreational fishing boat landed three in one day this on .