Bull Trout in Alberta
Bull trout in Alberta: the provincial fish and top predator. How to recognise one, where to find it and how to release it with care. A guide’s notes.
Alberta fly fishing · Fish species
Bull Trout in Alberta: The Provincial Fish
The bull trout is Alberta’s official fish and its top predator. It is a char, not a true trout, a slow-growing native of cold mountain rivers. It is also Threatened, and in Alberta every bull trout caught must be released.
How to identify a bull trout
Bull trout have a long, slim body and a large head for the size of the fish. The back is olive-green to grey, the sides are silvery with pale yellow to red spots, and there are no black spots on the dorsal fin.
Brook trout and bull trout are both chars, so look for the pale spots on a dark body rather than the dark spots of a true trout.
Where to find bull trout in Alberta
Bull trout have the largest natural range of any native trout in Alberta and are found in all river systems with mountain headwaters. They are usually in pools and backwater areas rather than fast riffles.
They need cold, clean water, intact gravel for spawning and connected habitat, which is why they are a good indicator of a healthy river.
Behaviour and feeding
Bull trout feed mainly on other fish, especially mountain whitefish, and also on insects, crustaceans and molluscs. They spawn in early fall in small creeks and mature slowly at about five years of age.
Spawning fish are vulnerable to bears, ospreys and anglers, and past overharvesting caused population declines.
Best flies and tactics for bull trout
| When | Conditions | What to fish |
|---|---|---|
| June | Cold, high water | Large streamers, sculpin patterns, Woolly Bugger |
| July–August | Pools and deep runs | Sink-tip with streamers, sculpins |
| September | Pre-spawn movement | Streamers; avoid spawning areas |
Not sure which patterns to carry? See our guide to the 30 best fly patterns for Alberta. Rods, reels and flies are provided on every guided trip.
Guide’s tip: big flies, strong tippet and a slow retrieve through the deepest pool. A bull trout often follows a streamer before it eats.
Release in the water: do not lift a big bull trout out. Keep it in the water, unhook it quickly and support it until it swims away.
Regulations and conservation
Alberta has a province-wide zero possession limit for bull trout, so every bull trout caught must be released. The species is Threatened under the Alberta Wildlife Act. Check the current Alberta Sportfishing Regulations for details.
Please also clean, drain and dry your waders, boots and gear between rivers to avoid spreading invasive species and fish diseases.
Frequently asked questions
Can I keep a bull trout in Alberta?
No. Alberta has a province-wide zero possession limit, so all bull trout must be released.
Is the bull trout Alberta’s provincial fish?
Yes, it is Alberta’s official fish.
What do bull trout eat?
Mainly other fish, especially mountain whitefish, plus insects and crustaceans.
How do I catch a bull trout on a fly?
With large streamers fished slowly through deep pools, on strong tippet.
Fish for bull trout with a guide
Private walk-and-wade trips in southern Alberta. Send me your dates and I will confirm availability.