
Check which species have trophy potential in Mystic Lake
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Mystic Lake is a lake located in Gallatin County, Montana, United States. It is most popular for fishing Brook trout, Lake char, and Cutthroat trout.
Disclaimer: Always check local fishing regulations, water access rights and land ownership before fishing, regardless of any catches logged in that area by the Fishbrain community. Fishbrain has mapped millions of acres of government-owned land across the USA to help you identify potential fishing access, but you are responsible for ensuring compliance with all legal requirements.
Fishing regulations in Montana can change throughout the year. Make sure to check this page before fishing for the most up to date rules and regulations for the current season. Local regulations govern when you can fish, the max size of the fish you can keep, how many fish you can keep, and more.
Below you will see fishing regulations for catching Brook trout as of April 14th, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
Seasons
Bag limit
Salvelinus fontinalis, brookie, coaster, speckled trout
11.4 miles away
20.2 miles away
87.3 miles away
89.6 miles away
115.5 miles away
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152.6 miles away
174.3 miles away
177.2 miles away
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200.0 miles away
212.8 miles away
217.8 miles away
244.6 miles away
252.1 miles away
260.4 miles away
264.3 miles away
264.5 miles away
267.0 miles away
270.8 miles away
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