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© 2026 Barbless.co. Flow and gauge data from USGS; weather from Open-Meteo. · v2026.10.18.2

  1. Home
  2. Fish
  3. Salmon & steelhead
  4. Steelhead

Updated September 26, 2026

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Steelhead: fish species profile, Female
Steelhead: fish species profile, Male
Steelhead: fish species profile, Juvenile
Female

Fish › Salmon & steelhead

Salmon & steelheadSalmonidaeT4 (Apparently Secure) · ESA: Not listed · Idaho: S4Anadromous

Steelhead

Oncorhynchus mykiss

Ocean-run rainbow trout that power one of Idaho’s longest and most mobile river fisheries.

Overview

Size range

24–48 in

Size range

24–48 in

Size range

Typical adult length in the waters we cover.

Water temperature

Coldwater

Water temperature

Coldwater

Water temperature

Preferred thermal regime for this species.

Active season

Seasonal runs

Active season

Seasonal runs

Active season

When anglers most often encounter this species.

Origin

Native

Origin

Native

Origin

Stocking and native history where this species is found.

Habitat

Anadromous & Migratory, Rivers & Large Rivers

Habitat

Anadromous & Migratory, Rivers & Large Rivers

Habitat

Primary water types where this species is found.

About Steelhead

Steelhead are the anadromous form of rainbow trout, born in freshwater, grown in the ocean, and returned to Idaho as hard-fighting adults. In Idaho, fisheries often begin in late summer on lower river reaches, then shift upstream through fall, winter, and spring as fish continue migrating.

Also known as: steelies

Steelhead Silhouette

  • Steelhead species silhouette
    Primary

Behavior

spawning
As anadromous rainbow trout, steelhead return from the ocean to freshwater to spawn.
feeding style
Coldwater salmonids that feed opportunistically; young fish rely heavily on zooplankton and aquatic insects, while larger fish take more insects and small fish.
seasonal notes
Idaho Fish and Game notes fishing can start in August and continue for about nine months, with fall action strongest on lower Clearwater, Snake, and Salmon reaches before effort shifts upstream into the South Fork Clearwater, Little Salmon, and upper Salmon.

Habitat

water types
large rivers, coldwater rivers, mainstem runs, tributary mouths
preferred holds
Traveling and holding fish favor cool, flowing river sections with depth, current seams, tailouts, runs, and softer holding water near migration corridors.

Where Found

Blue Ribbon waters

  • B-run steelhead

    Clearwater River

    B-run strain where applicable

  • Steelhead

    Salmon River

  • Steelhead

    Salmon River, Bayhorse Recreation Site to Tappan

  • Steelhead

    Salmon River, Cache Bar to Carey Creek

  • Steelhead

    Salmon River, Campbell Flat to Pine Bar

  • Steelhead

    Salmon River, Carey Creek to Riggins

  • Steelhead

    Salmon River, Colston Creek to Shoup Bridge Campground

  • Steelhead

    Salmon River, Corn Creek Campground to Spring Bar

  • Steelhead

    Salmon River, Deadwater Spring to Corn Creek Campground

  • Steelhead

    Salmon River, Hammer Creek to Mouth / terminus

  • Steelhead

    Salmon River, Headwaters to Sawtooth Kids Pond

  • Steelhead

    Salmon River, Lucile Recreation Site to Campbell Flat

  • Steelhead

    Salmon River, Maynard Hole to Hammer Creek

  • Steelhead

    Salmon River, Riggins to Maynard Hole

  • Steelhead

    Salmon River, Sawtooth Kids Pond to Sunbeam

  • Steelhead

    Salmon River, Shoup Bridge Campground to Tower Rock Recreation Site

  • Steelhead

    Salmon River, South Butte to Bayhorse Recreation Site

  • Steelhead

    Salmon River, Spring Bar to Lucile Recreation Site

  • Steelhead

    Salmon River, Sunbeam to South Butte

  • Steelhead

    Salmon River, Tappan to Colston Creek

  • Steelhead

    Salmon River, Tower Rock Recreation Site to Cache Bar

Recommended waters

  • Steelhead where open

    Little Salmon River

    Season open per regulation

  • Steelhead

    Snake River, Hells Canyon Dam to Clearwater Confluence (Lewiston)

Steelhead on the podcast

  • Lower Yuba River Nature - Like Fish Passage Project

    Episode 187 · Sep 9, 2026

    Lower Yuba River Nature - Like Fish Passage Project

    Listen on the Barbless Podcast

  • James Stone - NCGASA (Nor Cal Guides and Sportsmens Association Director

    Episode 180 · Feb 14, 2023

    James Stone - NCGASA (Nor Cal Guides and Sportsmens Association Director

    Listen on the Barbless Podcast

  • Captain Bryce Tedford - Stripers, Smallmouth, Largemouth, and moving to California

    Episode 174 · Jan 24, 2022

    Captain Bryce Tedford - Stripers, Smallmouth, Largemouth, and moving to California

    Listen on the Barbless Podcast

Diet

Steelhead feed on insects and other invertebrates, and larger fish also take terrestrial prey and small fish.

  • AntInferred
  • BaitfishInferred
  • BeetleInferred
  • Blue-winged OliveInferred
  • CaddisInferred
  • CrayfishInferred
  • Golden StoneflyInferred
  • GrasshopperInferred
  • Green DrakeInferred
  • LeechInferred
  • Mahogany DunInferred
  • MidgeInferred
  • October CaddisInferred
  • Pale Morning DunInferred
  • SalmonflyInferred
  • SculpinInferred
  • SkwalaInferred
  • TricoInferred
  • Yellow SallyInferred

Angler Tactics

tactics
Follow the run timing: start on lower river sections in late summer and fall, then move upstream as fish migrate. Focus on current edges, tailouts, and deeper holding water, and always check the current season and river-specific rules before fishing.
effective methods
drifting bait or beads, jigs under a float, spoons and spinners, flies

Regulations

Steelhead seasons in Idaho are split into fall (July–December) and spring (January–May), with season, limits, and river boundary descriptions varying by water. Check Idaho Fish and Game steelhead seasons and rules for the specific river before you go.

Regulations vary by water. Check current Idaho Fish and Game rules before fishing.

Conservation

Status: Native to Idaho (S4)

T4 (Apparently Secure) · ESA: Not listed · Idaho: S4

Runs between freshwater and the ocean.

Steelhead Photos

Female
Male
Juvenile

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On this page

OverviewSilhouetteBehaviorHabitatWhere FoundFrom the PodcastDietAngler TacticsRegulationsConservationPhotos

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IDFG Planner

On this profile

  • 24 waters
  • 19 food sources
  • 3 photos

Steelhead where open

South Fork Clearwater River

Season open per regulation