The Electric Caddis Pupa is an innovative fly that has shown how patterns should evolve with time, as all fly fishing gear has over the years. An effective pattern that can be fished in just about any way you see fit, which is one of the driving reasons it’s one of the best flies for trout fishing during a caddis hatch. The olive color is a must-have along with the brown and black versions. Somedays the trout just seem to key in on a certain color and that can be the difference between a good day and a great day.