Salmonidae
Steelhead
Oncorhynchus mykiss (anadromous) · 55–90 cm; a 10 kg fish is a good one anywhere.
How it feeds
Steelhead are rainbow trout that have gone to sea and come back; unlike salmon they do not die after spawning and will feed again in fresh water. That is why they can be caught on a swung fly or an egg pattern rather than only by flossing.
How to fish for it
Two approaches dominate: the swung fly on a floating line with a sink tip, in cold clear water, and the float-and-jig or bead rig in bigger, colder systems. Because steelhead are a threatened population in many basins, check the local regulations before you fish — some rivers are catch-and-release only, and some are closed.
Flies that work: Intruder-style streamer · Egg-sucking Leech · Nuke Egg · Woolly Bugger
Steelhead in the ledger
Deschutes River
Central Oregon, United StatesA desert canyon river with the biggest salmonfly hatch in the Pacific Northwest.
rainbow · steelhead
May · Jun · Sep · Oct · NovNorth Umpqua River
Cascade foothills, Oregon, United StatesThe home of the greased-line swing, and one of the last rivers with a fly-only steelhead reach.
steelhead · rainbow · cutthroat
Jul · Aug · Sep · OctPere Marquette River
West-central Michigan, United StatesA national-forest river where fall steelhead run on autumn rain, not on a dam schedule.
brown · steelhead · rainbow
Apr · May · Sep · Oct · Nov