Thatcher angler beats record set just three months earlier

This summer’s hot streak of record fish continues to churn out some impressive catches. Congratulations to Benjamin Smith of Thatcher, Idaho, who made fishing history on Aug. 28 when he caught a new Idaho catch-and-release state record brown trout from the Bear River in Franklin County.

Smith’s catch barely beats the recent record set by Caroline Langdale by 0.5 inches, who caught a similarly huge brown trout on the South Fork Snake River only a few months prior in May 2026. The only thing more surprising than a brown trout over 30 inches is how quickly the previous record fell. Given how rare a fish of this class is for Idaho, most anglers should have expected the previous record to stand for quite a while.

While the Bear River in southeastern Idaho is best known for its native cutthroat trout, the area is also home to some quality options for both rainbow and brown trout fishing.

Idaho Fish and Game’s Catch-and-Release Record Program recognizes anglers who catch qualifying fish and release them alive. Records are based on the fish’s total length, measured from the tip of the snout to the end of the tail, allowing anglers to pursue a state record while giving their catch the opportunity to swim away.

Welcome to the Idaho record fish books, Benjamin Smith!

Think you can catch a record fish? Visit Idaho Fish and Game’s State Record Fish Program to learn more about current records and how to submit an application.

Two State Records in Three Months — What’s Going On?

The rapid back-to-back nature of these two records is worth pausing on. Caroline Langdale’s May 2026 catch on the South Fork Snake River set the bar high, and yet within a single fishing season, Benjamin Smith walked it back even further on a completely different drainage. That kind of turnover at the top of a state record book is genuinely unusual.

Part of the explanation may simply be awareness. As catch-and-release record programs gain more visibility, more anglers know to measure a fish carefully before releasing it rather than just snapping a quick photo and letting it go. A trophy brown trout that might have swum away unrecorded a decade ago is now getting the documentation it deserves. The fish were always out there — the record-keeping culture is catching up to them.

It’s also worth noting that brown trout are long-lived fish. A specimen pushing or exceeding 30 inches has likely spent many years growing in its home water, surviving drought years, predation pressure, and heavy fishing seasons. When conditions align — good water temperatures, strong forage, favorable flows — these fish can put on size in ways that push them into record territory. Two banner fish in the same calendar year from Idaho’s trout waters suggests those conditions have been favorable.

The Bear River: More Than Just Cutthroat Country

Most anglers who know the Bear River in southeastern Idaho think of it primarily as cutthroat trout water, and for good reason — the drainage has historically supported strong native Bonneville cutthroat populations, a species with its own dedicated conservation attention from Idaho Fish and Game. But the Bear River system is diverse, winding through a variety of habitats from high mountain reaches down into broader valley sections in Franklin County, and that diversity supports a wider range of trout species than many anglers expect.

Brown trout thrive in the lower, slower sections of river systems where water temperatures run a bit warmer and deeper pools provide ambush cover. The Bear River’s valley stretches in Franklin County offer exactly that kind of habitat — undercut banks, deeper runs, and the kind of complex structure that a large predatory brown trout will claim as home territory. Finding a fish of record caliber in that section of river isn’t as surprising as it might seem on a map.

For anglers planning a trip to southeastern Idaho’s trout waters, it’s worth thinking beyond the well-known tailwaters and spring creeks. The Bear River and its tributaries offer a more off-the-beaten-path experience, and as Smith’s catch makes clear, the fish can be extraordinary. Always check current Idaho Fish and Game regulations before fishing any new water, as access, seasons, and gear restrictions can vary by section.

How Idaho’s Catch-and-Release Record Program Works

Idaho Fish and Game’s Catch-and-Release Record Program recognizes anglers who catch qualifying fish and release them alive. Records are based on the fish’s total length, measured from the tip of the snout to the end of the tail, allowing anglers to pursue a state record while giving their catch the opportunity to swim away.

The length-based measurement system is a smart solution to the inherent challenge of releasing a fish alive while still documenting it for the record books. Weight-based records traditionally require a certified scale, which is difficult to have on hand streamside, and weighing a large fish out of water for an extended period adds stress that can compromise its survival. A length measurement can be taken quickly with a soft tape measure or even a marked rod, then the fish goes back in the water.

If you’re serious about pursuing a catch-and-release record, a few habits are worth building into your routine. Carry a soft measuring tape or a dedicated measuring board in your pack. Know which species are eligible and what the current records are before you head out — that way you’ll recognize a potential record fish when you have one in hand rather than after it’s already gone. Document everything you can in the moment: clear photos with the fish laid against the tape, and witness information if anyone else is present. The application process moves much more smoothly when your documentation is thorough.

Brown Trout in the Northern Rockies: A Trophy Species Worth Chasing

Brown trout are not native to North America, but they have been part of the western trout fishing landscape for well over a century, and the Northern Rockies — covering Idaho, Montana, and Wyoming — holds some of the finest brown trout water anywhere in the world. Fish managers and anglers have developed a complex but largely respectful relationship with the species. Browns are predatory, adaptable, and capable of reaching sizes that dwarf most other stream trout in the same system.

In Montana, brown trout are a cornerstone of the blue-ribbon fishing experience on rivers like the Madison, Missouri, Bighorn, and Beaverhead. These fish are known for being more difficult to fool than rainbow trout, particularly as they grow larger. A big brown trout gets that way in part by being selective and cautious — it doesn’t make many mistakes. That wariness is part of what makes a catch like Smith’s so impressive. A 30-plus-inch brown trout has had years to learn every trick in the book, and getting one to commit to a fly or lure is a genuine achievement.

Late summer and fall tend to be prime time for targeting large brown trout across the Northern Rockies. As water temperatures cool heading into autumn, browns become increasingly active and aggressive in advance of their spawning season. This feeding window — when big fish are willing to move and strike — is when many of the most impressive catches of the year happen. Smith’s late August catch on the Bear River fits squarely into that seasonal pattern.

What This Means for Anglers in the Region

For anglers in Idaho, Montana, and the broader Northern Rockies, back-to-back state records in a single season should serve as a reminder that exceptional fish are out there in waters that don’t always make the highlight reels. The South Fork Snake River has a well-earned reputation for trophy trout. The Bear River in Franklin County is less celebrated nationally, but clearly capable of producing fish of the same caliber.

That’s an encouraging message for anyone willing to do the homework, put in the miles, and fish water that doesn’t show up in every guide book. State record programs exist in both Idaho and Montana, and both states maintain active catch-and-release categories that give conservation-minded anglers a legitimate path to the record books without harvesting the fish.

Montana anglers interested in pursuing their own records should check out Montana Fish, Wildlife & Parks’ official website for current state records and submission guidelines. Requirements and eligible species vary, so reviewing the current rules before your trip is always the right move.

Congratulations, Benjamin Smith

Welcome to the Idaho record fish books, Benjamin Smith! Landing a brown trout of this caliber on any water is a career highlight for most anglers. Doing it on a river that doesn’t typically appear on the trophy trout circuit makes it all the more remarkable. The Bear River just got a lot more interesting to a whole lot of fishermen.

Think you can catch a record fish? Visit Idaho Fish and Game’s State Record Fish Program to learn more about current records and how to submit an application.

Source: Idaho Fish and Game