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Idaho record book

Biggest Rainbow Trout in Idaho

Verified measurements rank first, longest to shortest. Public unknown-length catches appear below them. Every measured rainbow trout in Idaho outranks an unknown length.

3 public catches2 watersIdaho regulations ↗
18.0″ Rainbow Trout
Idaho Rainbow Trout RecordVerified Catch

Rainbow Trout

@keatonPro · Island Park Reservoir

Jul 16, 2024

18.0″

Bait IntelPRO

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Top rainbow trout in Idaho

1
Rainbow Trout
@keatonPro · Island Park Reservoir · Jul 16, 2024
Bait Intel · Pro
18.0″
2
Rainbow Trout
@keatonPro · Island Park Reservoir · Jul 17, 2024 · Spin fishing
Bait Intel · Pro
17.4″
3.8 lb
3
Rainbow Trout
@benPro · Coffee Pot Creek · Jul 26, 2025
Bait Intel · Pro
5.2″

Where the records are set

Island Park Reservoir

2 public catches

18.0″

Coffee Pot Creek

1 public catch

5.2″

Keep exploring

USA Rainbow Trout recordsIdaho record bookRainbow Trout in MontanaRainbow Trout in PennsylvaniaRainbow Trout in UtahRainbow Trout in Wyoming
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Anglers must hold a valid fishing license for the state they're fishing. Always follow your local fishing rules and regulations. Handle fish with speed and care: wet hands, minimal air time, quick release.

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