These are easily imitated with lures. Fishing gets better as water warms, and can be good on sunny days even in January. In the early spring it's all day, but later on in April and May, the action is early morning and evening. You can start out fishing the fjord and estuary areas in January and March, and the move out to the open coasts as the water gets warmer. Early spring is for fishing shallow waters with dark bottom, but when temperatures go up, deeper water with sandy bottom will fish good too.
Fish are fast, take the fly with a bang, almost always hooking themselves, and offer a good fight.
A lot of fish have to be released again because of their poor post spawning condition. If you want to keep fish, keep only those that are pure silver with loose scales. Summer - June, July, August Summer is for harder fishing. Late evenings and nights when the water cools off are best. Fish don't migrate any more, but often stay in small areas.