fiyahfish Share definition Flag a dumb person, normally ugly, that wont stop talking, and wants to be like you yo, why the fuck do u dress like me u fkn fiyahfish.ok, get ur own bloodclot swagg fiyahfish. fiyahfish by thefkntruth. August 5, 2010 0 0 Get merch Get the fiyahfish mug. Buy Now — $32.95 See more merch