Trout & salmon · Freshwater
Steelhead
Oncorhynchus mykiss (anadromous)
Anadromous rainbow trout of Pacific drainages; some inland residual populations.
Also called steelie, steelhead trout, steelies.
- Flowing water
- Ordinary target
- 4 of 4 overlays reviewed
- Reviewed 2026-08-27
Photograph · reviewed 2026-10-25
USFWS species-labelled underwater photograph of an adult steelhead over river gravel, full lateral profile with spotted back and tail. The fish carries freshwater-phase colour — the pink band and cheek develop after river entry; ocean-bright fish are chrome with sparse spotting. Anadromy comes from the USFWS label and run context, never from colour alone.
Ryan Hagerty / USFWS · U.S. Fish and Wildlife Service · Public Domain — U.S. federal government work · Identified by the publishing body Source
- Body form
- Same meristic trout body as inland rainbow, typically more elongate in ocean-grown adults. Caudal fin more forked than many inland rainbows.
- Habitat
- Often near bottom in winter; higher in the column as water warms within band.
- Prey
- USFWS: steelhead feed on aquatic and terrestrial invertebrates and small fish. Catalog exception: many winter fish are not feeding in the trout sense. Eggs are a reviewed forage class here, not proof that an egg event is occurring.
Handling · field practice, not a product
How to hold this fish, and what the record actually says
The four steps are field practice for every fish. Species-specific handling is listed only when the reviewed record has it. Nothing here is a harvest instruction or a legal opinion.
01 · Wet hands
Keep the slime on the fish. Dry hands and dry cloth scrape it off.
02 · Support the body
Hold it horizontal. Do not hang it from the jaw in air.
03 · Minimize air
Photograph fast. Return faster. The clock starts when it leaves the water.
04 · Clean, drain, dry
Before the next water. Invasives travel in live wells, bilges and felt soles.
Take this somewhere
This page is the record. The reading is what happens when you add water, a season and a temperature to it — that is where the families below get ranked against each other instead of just listed.
Those three links carry the fish and nothing else. No conditions were declared on this page, so none travel, and the link says so rather than sending an empty reading.
The half nobody publishes
What this record does not know
Everything else on this page comes from a named agency or peer-reviewed source. This is the other side of that: the questions a reviewer went looking for an answer to and came back without, and the fields the record leaves empty because filling them would mean guessing.
It is here rather than at the bottom because a page that only shows what it knows is easy to read as a page that knows everything. For Steelhead there are 13 of them.
Named by a reviewer
12Somebody looked for this and wrote down that they did not find it.
- Behaviour
Citation gap: “Withler / Quinn anadromous Oncorhynchus reviews” describes a source category rather than one resolvable document.
Nobody has sourced:
- cold-front / barometric response with primary-source support
- species-specific angling-pressure response beyond general cover/light notes
- stock-specific winter vs summer run calendars as a structured overlay
- Identification
Citation gap: “Withler / Quinn anadromous Oncorhynchus reviews” describes a source category rather than one resolvable document.
Nobody has sourced:
- Pacific DPS vs Great Lakes run as a color key — they are not
- winter-run vs summer-run as a structured ID field — they are the same species
- Forage
Nobody has sourced:
- finer month-by-month diet inside a season, which is waterbody-specific
- ocean vs freshwater adult diet as a structured split beyond the catalog exception
- Season
Citation gap: “Withler / Quinn anadromous Oncorhynchus reviews” describes a source category rather than one resolvable document.
Nobody has sourced:
- month-by-month location changes inside a season, which are waterbody-specific
- stock-specific winter vs summer run calendars
Absent from the record
1No reviewer wrote a gap here. The field is simply empty, which is its own answer.
- Population context
No regional population profile is registered. The species-level reading stands on its own; it does not silently become a local one.
Where the record puts it
Water and range
Flowing water
7 reviewed holding classes- Run
- Seam
- Tailwater
- Current break
- Pool head
- Deep pool
- Boulder pocket
DepthOften near bottom in winter; higher in the column as water warms within band.
Moving waterTravel lanes and holding lies adjacent to strong current, not the fastest core.
LightLow light and colored water increase movement; bright low clear water often holds them tight.
Thermal band
Temperature
- Preferred
- 54–64°F
- Reported active
- 38–60°F
- Cold edge
- 36°F
- Warm edge
- 65°F
These are measured preference figures.
Hasnain, Shuter & Minns 2013 compiled final temperature preferendum (CJFAS 70:964–972), tabulated from that compilation by Jones et al. 2021 (OMNRF TR-43 Appendix D Table A.3): 15.5°C (60°F). Hasnain compiled the rainbow-trout preferendum; this anadromous record uses that same laboratory metric. The previous 42–55°F preferred band sat below it and is retired as preferred. Inland rainbow is a separate record. Active and edge values stay as the wider reviewed envelope, not the preferendum.
How it uses water
Behaviour
Adult steelhead are migratory trout in current. They are not inland rainbows that happen to be large.
Catalog exception: this record does not imply a hatch match; many winter fish are not feeding in the trout sense. Eggs, insects, and small fish are capacity, not a declared event.
Low light and colored water increase movement. Bright, low, clear water often holds them tight to cover and depth.
Seasonal activityWinter-run and summer-run stocks differ and must not be collapsed. Spawning overlap is conservation context. Listed Pacific DPSs require current NOAA and state rules.
Temperature-driven behaviourPreferred band roughly 42–55°F. Cold edge near 36°F; warm edge near 65°F. Summer low flow and heat are invalidators, not a shallow feeding cue.
Depth movementOften near bottom in winter; higher in the column as water warms within band.
Facing the currentTravel lanes and holding lies adjacent to strong current, not the fastest core.
Change in flowFlow pulses can move fish. That is migration/holding mechanics, not a named bottleneck.
ClarityColored water can increase movement. Bright low clear water tightens lies.
CoverRuns, seams, tailwater, current breaks, pool heads, deep pools, and boulder pockets.
Open waterThis catalog record is flowing water only. Stillwater steelhead is a fail-closed mismatch, not a lake-rainbow substitute.
Predator avoidanceDepth, current, and broken water. Bright low water is a hold-tight problem.
TerritoryHolds travel-adjacent lies rather than a defended inland-rainbow feeding station.
Spawning (conservation context)NOAA: hatch in gravel-bottomed, fast-flowing, well-oxygenated rivers; return to freshwater to spawn; may spawn more than once. Winter and summer-run timing must not be collapsed. Spawning gravel is excluded from target guidance. Listed DPSs are regulatory invalidators, never target layers.
Where the general rule stops
- Does not imply a hatch match; many winter fish are not feeding in the trout sense.
What it can eat
Forage
- Aquatic insects
- Eggs
- Small forage fish
USFWS: steelhead feed on aquatic and terrestrial invertebrates and small fish. Catalog exception: many winter fish are not feeding in the trout sense. Eggs are a reviewed forage class here, not proof that an egg event is occurring.
- Feeding style
- Opportunistic
- Feeding zone
- Mixed
Through the year
- Winter
- Returning winter-run fish may take little. Do not convert presence into a nymph or egg hatch.
- Early spring
- Insects and eggs remain capacity only. Spawning overlap is conservation context.
- Spring
- Same rule: forage classes exist; a hatch is not inferred. Summer-run stocks are not on this spring feeding story.
- Summer
- Summer-run adults may be in river systems. Heat and low flow are constraints. Still not an inland-rainbow hatch match.
- Fall
- Eggs and insects remain possible foods in some systems. Do not assume an egg event from the calendar.
By life stage
- Young of year
- USFWS notes zooplankton-scale feeding when young; natal-stream parr then take aquatic invertebrates.
- Juvenile
- Aquatic insects and crustaceans in freshwater rearing, then ocean prey after emigration — ocean diet is not this freshwater record's job.
- Adult
- Returning adults may take insects, eggs, and small fish, or may not be feeding in the trout sense.
Ontogenetic shiftFreshwater insectivory to marine fish/invertebrate growth, then a freshwater return that is often not a feeding problem in the inland-rainbow sense.
SubstitutionsGreat Lakes vs Pacific prey fields differ. This species overlay does not auto-select them.
Diet capacity is not proof that a hatch or prey event is occurring. Observed current forage still comes from a user observation or Hatch Match.
Through the year
Season
Winter
- Where they sit
- Runs, seams, tailwater, deep pools, and boulder pockets adjacent to strong current.
- Depth
- Often near bottom.
- Feeding
- Do not convert presence into a hatch match. Many winter fish are not feeding in the trout sense.
- Temperature
- Preferred 42–55°F; cold edge near 36°F.
What that changesSwing, bottom-contact drift, dead-drift, and downstream retrieve — the reviewed flowing families only.
What would count against it
- treating winter steelhead as inland rainbow nymphing by default
- using spawning gravel as holding water
Winter-run spawning overlap is caution. Spawning gravel is excluded from target guidance.
Early spring
- Where they sit
- Travel lanes and holding lies as some winter-run fish continue and others spawn.
What that changesSwing and bottom-contact drift.
Early-spring overlap with spawning. Winter and summer-run stocks still must not be collapsed.
Spring
- Where they sit
- Holding water adjacent to current as temperatures rise within band.
What that changesSwing, dead-drift, and downstream retrieve.
Spring spawning overlap remains caution for stocks that spawn now.
Summer
- Where they sit
- Summer-run stocks may be in river systems; heat and low flow are constraints.
- Temperature
- Warm edge near 65°F. Low flow and heat are invalidators, not a shallow feeding cue.
- Current
- Holding lies adjacent to strong remaining current, not the fastest core.
What that changesSwing and downstream retrieve in remaining travel water.
What would count against it
- collapsing summer-run into the winter-run calendar
- forcing stillwater families — this record has none
Fall
- Where they sit
- Holding and travel water as some summer-run fish continue and winter-run fish have not yet arrived as a single story.
- Forage
- Eggs and insects remain capacity only.
What that changesSwing and bottom-contact drift.
What would count against it
- assuming an egg event from calendar alone
Spawning · Winter, Early spring, Spring
Winter and summer-run stocks differ; do not collapse them.
Recorded as conservation context. No spawning site, staging concentration or migration bottleneck is named anywhere in this catalog, because naming one is how a population gets fished out.
Telling it apart
Identification
Body form Same meristic trout body as inland rainbow, typically more elongate in ocean-grown adults. Caudal fin more forked than many inland rainbows.
Adult A large, often silvery Oncorhynchus mykiss in flowing water. Treat ocean- or Great Lakes-run adults as this record, not inland rainbow.
Juvenile Parr in natal streams look like rainbow parr. Juvenile appearance does not decide whether the fish will become a steelhead or a resident rainbow.
Sexes Spawning males kype and darken. Sex is not the record split; life history is.
Regional colour Great Lakes fish are anadromous into the lakes, not the Pacific. Pacific DPS appearance overlaps; geography and run timing are not read from color.
Spawning colour Freshwater adults darken, show more spots and a stronger pink band, and males may kype. Color is not a targeting cue.
What to look at
- NOAA: steelhead are the anadromous life history of Oncorhynchus mykiss; fish that remain in fresh water are rainbow trout. This catalog keeps the two as separate records.
- Fresh-from-the-ocean adults are chrome-silvery with a faint or absent pink stripe and sparse spotting until freshwater residence darkens them.
- Typically larger than sympatric inland rainbows. Size is supporting context, not a species key by itself.
- USFWS: scale or otolith chemistry is the laboratory confirmation of anadromy. In the field, treat run context, silvery ocean growth, and the steelhead record rather than forcing an inland rainbow ID.
- Winter-run and summer-run stocks are the same species record and must not be collapsed into one calendar.
- Average adult length
- Returning adults commonly 24–34 in; inland residuals and half-pounders are smaller.
- Common angling size
- 26–32 in in many Pacific and Great Lakes fisheries.
- Typical weight
- Often 6–12 lb; larger fish occur. Inland rainbow weight bands do not apply.
- Maximum documented
- Ocean- and Great Lakes-grown maxima far exceed inland rainbow size. Those maxima belong here, not on the inland rainbow dossier.
- Longevity
- NOAA: unlike most Pacific salmon, steelhead can spawn more than once. Age is stock-specific.
What it gets confused with
- Rainbow trout (inland)
- Same species, resident life history. Inland rainbows are typically smaller, more heavily spotted, and show a clear pink band in fresh water. Anadromous fish belong on this steelhead record.
- Coho salmon
- Coho have a white gum line, a different tail-spot language, and are semelparous Pacific salmon. Steelhead are iteroparous trout (NOAA: they can spawn more than once).
- Chinook salmon
- Chinook are larger-bodied salmon with a black gum line and a different spot pattern on the back and tail. They are not anadromous rainbow trout.
- Atlantic salmon
- Atlantic salmon are Salmo, conservation-sensitive in this catalog, and a separate fail-closed record. Do not treat a chrome Pacific or Great Lakes steelhead as Atlantic salmon.
What follows from all of that
Presentation families
Flowing water
Swing
Let current carry a bait or fly across a lane so it broadens and lifts at the hang.
- downstream quartering
- controlled belly
- hang-down pause
- slow lift
What it asks of the tackle
- Depth control
- Moderate
- Sensitivity
- Moderate
- Casting distance
- Moderate
- Weight range
- Unweighted to 1/4 oz
- Cover resistance
- Low
- Line visibility
- Moderate
- Retie frequency
- Low
Bottom-contact drift
Tick or crawl a food form along the substrate through a feeding lane without snagging constantly.
- feel the bottom
- short hops
- reset after hang
- weight just enough
What it asks of the tackle
- Depth control
- High
- Sensitivity
- High
- Casting distance
- Moderate
- Weight range
- 1/8–3/8 oz
- Cover resistance
- Moderate
- Line visibility
- Low
- Retie frequency
- Moderate
Dead drift
Allow a food-form imitation to move at or near current speed through a defined feeding lane.
- controlled depth
- minimal drag
- short-to-medium presentation lane
- occasional repositioning
What it asks of the tackle
- Depth control
- High
- Sensitivity
- High
- Casting distance
- Short to moderate
- Weight range
- 1/64–1/8 oz or unweighted fly
- Cover resistance
- Low
- Line visibility
- Low
- Retie frequency
- Moderate
Downstream retrieve
Move a bait with the current, then add just enough speed to give it a swimming job.
- cast upstream
- recover slack
- match or slightly beat current
- pause in pockets
What it asks of the tackle
- Depth control
- Moderate
- Sensitivity
- Moderate
- Casting distance
- Moderate
- Weight range
- 1/16–3/8 oz
- Cover resistance
- Low
- Line visibility
- Low
- Retie frequency
- Moderate
What moves them for this fish
Reviewed rules that push particular families up when the conditions match. Each one names the conditions it needs and why it exists, so you can disagree with it.
Cold steelhead frequently hold lower and tighter; reinforce near-bottom controlled drift over broad higher-column movement.
When
Flowing water · Winter or Early spring · cold refuge or active
Moves up
Bottom-contact drift, Dead drift, Swing, Downstream retrieve
Reviewed 2026-08-27
In workable temperatures and classic travel/holding lanes, steelhead can occupy enough of the column for swing mechanics to regain relative fit.
When
Flowing water · preferred · Run, Seam, Pool head, Tailwater
Moves up
Swing, Bottom-contact drift, Downstream retrieve
Reviewed 2026-08-27
Where every sentence came from
Sources
Agency
NOAA Fisheries steelhead species profile
Used for behaviour; forage; season. Read 2026-08-30, next check 2026-11-21.
Agency
NOAA Fisheries steelhead status
Used for habitat, thermal band and presentation families. Read 2026-08-27, next check 2026-11-27.
Agency
NOAA Fisheries steelhead species profile (anadromy vs resident rainbow, iteroparity)
Used for identification. Read 2026-08-30, next check 2026-12-11.
Agency
Used for identification. Read 2026-08-30, next check 2026-12-11.
Agency
U.S. Fish and Wildlife Service rainbow / steelhead species profile (invertebrates and small fish)
Used for forage. Read 2026-08-30, next check 2026-11-14.
Peer reviewed
Withler / Quinn anadromous Oncorhynchus reviews
Used for habitat, thermal band and presentation families. Read 2026-08-27, next check 2026-11-27.
A source with no link predates the rule that one has to carry a URL. It is still a real citation and still checkable; it just takes a search rather than a click, and that is worth knowing before you rely on it.