Caledonia Parachute Black Gnat can make all the difference when encountering fussy trout.
Black Gnat - This classic traditional winged wet fly pattern has proven itself time and time again with wild loch trout. They also work very well on UK reservoir fisheries for top of the water fishing.
Caledonia sparkle gnat is a good approximation of many terrestrial insects as well as gnats.
Caledonia Black Gnat is perfect flies for fishing.
Caledonia Griffiths gnat flies are a classic American dry pattern that consistently catches fish when other flies fail.