IPON FIESTA Santa, Ilocos Sur "Ipon" appear nine days after the full moon during the months of September to February. Ipon are translucent small fishes and could grow to normally 6-8 inches. They are silver in color hence the common English name “silverfish”. This is known under different names in the Philippines. Some regions call it “Dulong”. However, the open season in catching "ipon" is from October to January. Catching "ipon" is considered as one of the principal means of sustaining the liv