Places where you trade Pokemon on Leaf Green and Fire Red: Cerulean City - House on left of the PokeCenter Bald Man wants a Poliwhirl, you get a Jynx. -- Route 5 - Underground Path south of Cerulean City Little girl wants Nidoran-M you get Nidoran-F. -- Vermilion City - House to the left of Poke Mart Little girl wants Spearow, you get Farfetch'd. -- Route 2 - House south of Pewter City (Enter through Digglet's Cave or use CUT) Young Boy wants an Abra, you get Mr. Mime. -- Route 11 - Town Separation House east (to the right) of Vermilion City (second floor) Young Boy wants Nidorino, you get Nidorina. --