Trout & Salmon Species of Alaska

Native; some of the largest wild rainbows in the world

The Rainbow Trout (Oncorhynchus mykiss) is Alaska’s marquee fly fishing species. The wild rainbows of the Kenai River regularly reach 25–30 inches; the trophy rainbows of the Naknek River run 28–34 inches with documented 10+ pound fish; and the Alagnak/Nonvianuk drainage in Bristol Bay holds what many anglers consider the finest wild rainbow fishery on Earth (with regulation-mandated catch-and-release in all flowing waters of that drainage). Russian River rainbows feed heavily on sockeye eggs once the salmon arrive in June and remain on eggs and flesh through fall.

Native sea-run rainbow form

The sea-run form of the rainbow trout is the iconic Steelhead (Oncorhynchus mykiss). The Situk River near Yakutat carries the largest wild steelhead run in Alaska — ADF&G-documented, not marketing copy. Two distinct runs: spring (peaks late April–mid May) and fall/winter (begins November). Average fish 8–12 lbs, no hatchery influence, gin-clear water. The Anchor River on the southern Kenai Peninsula offers the most southerly road-accessible steelhead fishing in Alaska, peaking September–October. Smaller runs exist on the Karluk on Kodiak Island and several Southeast tributaries.

Native; pure fly fishing, dry-fly-friendly

The Arctic Grayling (Thymallus arcticus) is the most underrated fly fishing species in Alaska. The Gulkana River, a federally designated National Wild River and a clearwater tributary of the upper Copper drainage, is one of the finest grayling fisheries in North America. Grayling readily take dry flies (Elk-hair caddis, Humpies, Wooly Worms), making this the best “trout-like” dry fly experience in Southcentral Alaska. Beautiful fish — sail-like dorsal fin marked with red, blue, and gold spots, body in shades of purple-bronze.

Native; sea-run and resident forms

The Dolly Varden (Salvelinus malma) is present in nearly every Alaskan trout system — sometimes resident, sometimes sea-run. Sea-run Dollies arrive in coastal rivers like the Anchor in July and remain through fall. Resident fish hold in cold streams year-round. They’re a fine fly target on swung wet flies, small streamers, and (during salmon runs) egg patterns. Often confused with Arctic Char (Salvelinus alpinus) — the two species overlap in some Alaska waters and are difficult to distinguish in the field.

Native; ⚠️ 2026 KENAI FULL CLOSURE in effect

The King Salmon / Chinook (Oncorhynchus tshawytscha) is Alaska’s largest and most iconic salmon species, historically the king of the Kenai. ⚠️ For the entire 2026 season, ADF&G has issued a FULL CLOSURE on king salmon fishing on the Kenai River — both early run (May 1 – June 19) and late run (June 20 – Aug 15), with zero retention AND zero catch-and-release. Other drainages have varying restrictions: Deshka heavily restricted, Anchor low-forecast warning, Kasilof restricted to hatchery-origin retention only. Verify all current emergency orders at adfg.alaska.gov before fishing. King salmon stamp is required statewide on rivers with open seasons.

Native; the heart of Alaska’s fishing culture

The Sockeye Salmon / Red Salmon (Oncorhynchus nerka) is the most economically and culturally important salmon species in Alaska. The Russian River is the most heavily fished sockeye stream in Alaska — possibly the world — during peak runs in July. Fly-fishing-only by regulation, single-hook unweighted artificial fly. Bristol Bay sockeye returns are among the largest salmon runs on Earth. Dipnetting (a personal-use Alaskan resident fishery separate from sport fishing) is a defining cultural ritual in summer.

Native; aggressive, fly-friendly, peak Aug–Sep

The Coho Salmon / Silver Salmon (Oncorhynchus kisutch) is the most fly-friendly of the Pacific salmon. Cohos hit aggressive streamers, flesh patterns, and articulated flies; they jump and fight hard. Peak run is August–September. The Kenai, Naknek, Anchor, Situk, and most coastal Alaska rivers all carry strong coho runs. Coho is the salmon most likely to make a fly angler from the Lower 48 fall in love with Pacific salmon fishing.

• Cutthroat Trout — sea-run and resident on the Situk and Southeast Alaska systems. The classic red “cut” under the jaw is the field tell.
• Pink (Humpy) Salmon — the smallest Pacific salmon, runs in odd-numbered years primarily, distinctive humpback on spawning males.
• Chum (Dog) Salmon — vertical purple-and-green tiger striping on the flanks of spawning fish. Tough fighters, often overlooked by sport anglers.
• Lake Trout — in deep Alaska lakes (not a river fly-fishing target on the rivers covered here, but worth knowing about if you fish stillwater).
• Northern Pike — native in some Interior and Western Alaska systems; introduced (and invasive) in some Southcentral waters. Excellent fly target where present.