Nightfin Snapper can be caught in Azshara, Badlands, Deadwind Pass, Felwood, Feralas, Moonglade, the Plaguelands, Silithus, The Hinterlands, Un'Goro Crater, Winterspring, inside the Temple of Atal'Hakkar in the Swamp of Sorrows, and inside Zul'Farrak and Zul'Gurub.