Thymallus arcticus
A sail-finned northern BC native that rises eagerly to dry flies but can't handle heavy harvest pressure.
Grayling spawn in spring, typically April through June, moving out of lakes and larger rivers into small tributary streams, and many of those streams are closed to all fishing during that window. The best fishing runs mid-July through September, once fish have dropped back into main rivers and are keying on surface insects. A short window in early fall, just before freeze-up, can also produce good dry-fly action as fish feed heavily ahead of winter.
Mornings and evenings during active insect hatches are usually most productive, but grayling are opportunistic and will feed through the middle of the day too, especially on overcast days or in the cool water typical of northern BC streams.
A light fly rod, 3 to 5 weight, is the classic approach. Drift a dry fly through riffles, runs, and current seams and watch for the distinctive sailfin breaking the surface as fish rise. Grayling school tightly, so once you find one you have usually found many, and sight fishing in clear water is a big part of the game. Light spinning gear with small spinners or spoons worked through the same current breaks also takes fish, particularly when nothing is hatching. Because grayling hit readily and travel in groups, it is easy to over-fish a single pod, so consider moving on once you have had a few takes from the same spot.
In BC, Arctic Grayling are a northern species, found through the Peace, Parsnip, Omineca, and upper Skeena drainages rather than in southern or coastal watersheds. Look for them in cold, clear, moving water: riffles, runs, and current seams over gravel or cobble bottoms, as well as lake inlets and outlets where current concentrates food.
14 waters whose published rule specifically mentions arctic grayling. This isn't exhaustive, plenty of other waters hold this species too under the region's default limits without a water-specific line.