The secret Perdigon Nymph Flies of Spanish fishermen competitors was revealed a few good years ago: Perdigon Nymphs. The Spanish guys had fantastic results with these flies. Now perdigon flies are not a secret anymore. At first look these flies are quite disappointing, very simple, overloaded with a big brass bead, slim body coated with resin. No dubbing, just a body thread and a strange black spot made of black marker in the wing case part. Everything has the logic here: slim body to let the fly sink fast, big bead to let the fly to go fast in the feeding area, black spot imitate the the thorax and works like a hot spot. These flies are tied on small and very small hooks and are used only in fast flowing rivers. These fishing flies are hand tied by many years of experienced workers.