Bull Trout Fishing in Montana

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Overview

The Bull Trout is one of Montana’s most iconic and elusive native fish and a symbol of the state’s wild, cold-water ecosystems.

Recognized by their mix of pink, orange, and pale yellow spots and their translucent fins, bull trout are powerful predators that demand deep respect from anglers who pursue them. Because they are listed as a Threatened Species under the Endangered Species Act, most of Montana’s bull trout populations are closed to harvest. However, anglers can legally target them for catch-and-release on certain waters, including Lake Koocanusa — one of the few places in the lower 48 where fishing for bull trout is permitted.

At Get The Net Outfitters, we offer guided trips on Koocanusa that give anglers a rare opportunity to experience these remarkable fish up close, while following all conservation and handling regulations that protect their future.

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The Fish: Montana’s Native Apex Predator

Bull trout (Salvelinus confluentus) are not true trout at all, they’re part of the char family, closely related to lake trout and brook trout. They prefer cold, clean, and connected river systems with deep pools and gravel beds for spawning. Their presence is an indicator of a healthy aquatic environment, which is why they’re sometimes called the “canary in the coal mine” of Montana’s rivers.

Bull trout can grow well over 30 inches and exceed 10 pounds, though most fish caught in Lake Koocanusa range between 4–8 pounds. They’re strong, muscular fish built for power rather than speed. When hooked, they put up a bullish fight. They just don’t give much to you as an angler, like a pit bull with fins, that’s what I call them.

These fish are opportunistic predators, feeding primarily on smaller fish such as whitefish, kokanee salmon, and juvenile rainbows, depending on the body of water.

Where We Fish for Bull Trout

Lake Koocanusa

Lake Koocanusa is the crown jewel for bull trout fishing in Montana.
Stretching nearly 90 miles from Libby, Montana, to British Columbia, this deep reservoir was created when the Kootenai River was dammed by the Libby Dam in 1972.
Its name combines Kootenai, Canada, and USA and its waters are as wild and pristine as they sound.

Bull trout in Koocanusa move seasonally throughout the lake, following baitfish schools. In spring and fall, they’re found in shallower zones and can be targeted with trolling or casting methods. During summer, they move deeper, sometimes holding in 100+ feet of water where temperatures remain ideal.

Other Montana Waters

While Koocanusa is one of the few reservoirs open to Bull Trout fishing, these fish also inhabit rivers like the Flathead, Clark Fork, and Blackfoot though those populations are strictly protected.

We follow all state and federal guidelines, ensuring our clients fish legally, ethically, and sustainably.

Permits & Regulations

Anglers who wish to fish for bull trout on Lake Koocanusa must possess:

A valid Montana fishing license, and
A free Bull Trout Catch Card (available from any Montana FWP office or online).

Fishing is catch and release only. Barbless hooks are strongly recommended to minimize stress on the fish, and proper handling practices such as keeping fish in the water during release are always followed.

We do not handle the permitting process. We ensure that all anglers have the proper permits before fishing for Bull Trout.

Seasons & Timing

Spring (April – June)

As the lake begins to warm, bull trout become more active and move toward tributary mouths and shallow structure in search of baitfish. This is one of the best times to catch them trolling spoons or plugs that imitate kokanee salmon.

Summer (July – August)

During midsummer, bull trout move deeper to find cold, oxygen-rich water. We use sonar to locate fish suspended around 70–120 feet deep, often near sharp drop-offs and submerged ridges. The fishing can be more technical, but the payoff is big.

Fall (September – November)

As temperatures cool, bull trout again move toward tributaries to stage for the spawn. This is when the largest fish of the year are often caught. Fall is known for fewer bites but higher quality fish.

Winter (December – March)

We don’t ice fish Koocanusa. But this is a GREAT time to catch post spawn, hungry, Bull Trout while trolling, as long as the lake remains open.

Techniques & Tactics

Our approach to bull trout fishing depends on the time of year and water temperature. Because these fish often feed on kokanee and other small fish, we use realistic presentations designed to trigger aggressive strikes.

Trolling: We run large plugs, spoons, and Crankbait that mimic kokanee, typically from the surface down to 30 feet from October through May, and deeper during the summer months.

Modern sonar and side-imaging help us locate bull trout and track their movements throughout the day. We use the same gear as we do for rainbow fishing, making it an incredibly fun and exciting experience!

What to Expect on a Guided Trip

Our guided bull trout charters on Lake Koocanusa are designed for both comfort and success. We run fully equipped, enclosed boats that allow anglers to fish comfortably in all conditions — even in early spring or late fall when temperatures can be cold.

Your guide will handle everything from tackle and rigging to fish handling and photography, ensuring a smooth, enjoyable day on the water.

Most trips depart from the Rexford Bench Boat Ramp, though launch sites may vary based on water levels and conditions. Trips generally last around 8 hours, giving plenty of time to cover productive water and follow baitfish movements.

All fishing equipment is provided, including rods, reels, tackle, and lures. Clients should bring food, drinks, weather-appropriate clothing, and a valid fishing license with their Bull Trout Catch Card.

The Bull Trout Experience

Hooking a bull trout is an unforgettable moment. There’s a sudden, unmistakable thump, and then the line tightens into a steady, heavy pull. The fish drives deep, shaking its head and testing your strength with each run.

Unlike rainbow or brown trout that leap to the surface, bull trout fight with brute force — deep, sustained power that you feel all the way to your elbows.
Seeing one emerge from Koocanusa’s clear green water, with its olive back and orange-tinged fins, is a sight that leaves a lasting impression.

Because they are such a prized native species, every encounter with a bull trout is special — a reminder of Montana’s wild legacy and the care required to keep these fisheries thriving.

Trip Details

Primary Location: Lake Koocanusa (near Eureka, MT)
Season: Year-round, with best action from November to May.
Trip Duration: Full-day (8 hours)
Group Size: up to 6 anglers
Gear Provided: All rods, reels, tackle, and bait
Requirements: Montana fishing license + Bull Trout Catch Card

Why Anglers Choose Get The Net Outfitters

Fishing for Bull Trout requires knowledge of structure, bait movement, and seasonal patterns, and our guides live for it. With over 13 years of experience fishing Lake Koocanusa, we know how to adapt to conditions and put clients on fish.

Every detail of your trip is designed for success and comfort. We operate fully equipped boats featuring top-tier electronics, heated cabins in winter, and all the necessary tackle to tackle deep-water giants. Whether you’re chasing numbers or size, our approach is strategic, patient, and practical.

We don’t just guide, we teach. You’ll leave with a better understanding of how to read water, use sonar, and work the techniques that consistently catch fish.

Book Your Bull Trout Trip

For anglers looking to experience one of Montana’s rarest fishing opportunities, Lake Koocanusa bull trout fishing delivers adventure, challenge, and stunning scenery all in one trip.
This is not a numbers game — it’s about pursuing a fish that represents the wild heart of the West.

Whether you’re checking a new species off your list or chasing your personal best, our team at Get The Net Outfitters provides the knowledge, equipment, and local expertise to make it happen.

Call or text 406-230-1999 to reserve your guided bull trout trip today and experience one of Montana’s most extraordinary fisheries.

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