How to Sight-Fish with Nymphs

We spotted this big cutthroat in a pool and sight-fished to it with a nymph rig. All Photos: Kubie Brown

When you think of sight fishing for trout, you probably think of dry-fly fishing. Images of making a perfect drift to the rising ring of a rainbow or dropping a big terrestrial in front of a cruising brown are some of the most iconic in fly fishing and the reason many of us take up the sport. However, if you strictly sight fish with dry flies, you’re missing out on a lot of trout-catching opportunities that are right before your eyes. Under the right conditions, you can have a lot of fun sight-fishing with nymphs.

To some anglers, it may seem strange or even downright blasphemous to cast a nymph instead of a dry fly in front of a trout that you can see. Yet the reality is that sight-fishing with nymphs is one of the most challenging and rewarding things you can do with a fly rod. To set the hook on a fish you see eating beneath the surface rather than on top is a real thrill—so long as you know where, when, and how to do it.

Slow and Low

Obviously, one of the keys to sight fishing is being able to see the fish, and that means fishing in the slowest water you can find. In sluggish or still currents, you’re better able to spot fish lying on the bottom or cruising without the benefit of a riseform giving the trout away. This makes deep, dead-water pools along the river’s edge, meandering backwaters, sloughs, and overflowing bank edges all prime targets for sight-fishing with nymphs, as are shallow lakes and ponds.

Oftentimes, the only indication that a trout is eating is that you can briefly see the white of its open mouth.

Without the conveyer belt of the current to bring them food, trout in these areas are usually on the hunt, making them willing and convenient targets for sight fishing. This is especially true before and after a hatch, or when there’s no hatch at all. When trout don’t have a specific insect to concentrate on, they’ll often move into slower water, as there’s usually plenty of often overlooked prey for them to hunt.

Every kind of nymph—from mayflies, to stoneflies, to caddisflies, and even scuds and Chironomids—can be found in these sluggish or stillwater areas. These bugs will crawl along the bottom or flutter through the middle of the water column, often right into cruising trout’s mouths. After a bit of rock-rolling to learn what type of nymphs are living in your chosen fishing spot, you can target these hunting trout by sight.

The Right Bug for The Conditions

Nymph selection for sight fishing is crucial to success, since shots at slow-water trout are often limited. Not only do you need to choose a nymph to match the hatch as best as you can, but you also need to match the style of nymph to the trout’s behavior.

Choosing flies of the right size and weight to match your presentation can be the key to success.

Trout that are feeding beneath the surface of slow-moving or still water are usually doing one of two things: moving in a slow continuous circle as they hunt for food along the bottom, or holding in one particular spot and casually sucking in nymphs and small insects that slowly drift past in the middle of the water column. Both behaviors require a specific style of pattern and presentation.

When trout are cruising and hunting for nymphs along the bottom, fish a beadhead or jighead nymph. Trout feeding this way are easy to identify, as you’ll be able to see them actually digging or rooting in the river bottom. You’ll also often see these fish suddenly dash forward with an open mouth or grabbing at insects that are swimming among or clinging to the rocks.

Target trout that are feeding in the middle of the water column with unweighted or lightly weighted nymphs that slowly sink to the depth where fish are feeding. This will generally happen in slow-moving currents where you’re actually seeing trout rise slowly from the bottom and opening and closing their mouths as they feed on unseen nymphs. Catching these fish can require some finagling where you mend and change from heavier to lighter fly patterns to dial-in the depth of your presentation. Usually, trout behaving this way are looking to feed and will give you multiple chances to get your set-up right before shutting down or moving on.

An angler strips a nymph through a very slow section of river in Montana.

Stripping and Drifting

When you’re sight-fishing with nymphs, there are three basic presentations that will be effective—stripping, drifting, and jigging. All three can be effective, so long as you use the right approach at the right time. Just like when you’re choosing a nymph, selecting a presentation for the trout you see comes down to trout behavior and what the fish is doing beneath the surface.

If you can see cruising trout hunting nymphs along the bottom or even in the center of the water column, stripping flies is your best bet. These trout are usually aggressive and will actually chase down a nymph or even a pair of nymphs being stripped along like a streamer. However, one of the keys to success when casting and stripping nymphs to cruising trout is leading the fish. Just like you would for a bonefish or carp, you want to cast your nymphs in front of the trout so that your flies are in place and ready for the trout’s approach, rather than casting them directly at the fish and possibly spooking it.

To lead a trout you can see actively feeding on nymphs, cast between 10 and 15 feet ahead of the fish. Let your flies sink to the bottom, and then as the trout approaches, start making small quick strips to get its attention. Occasionally, the trout will simply ignore your flies, which means that you need to adjust the size or shape of your patterns or change the speed of your stripping cadence. Usually, if you’ve led the fish properly and haven’t created a lot of commotion, you’ll have a chance to make adjustments and then take a second shot or even a third shot at the trout until it either spooks or strikes.

Drifting a nymph to a waiting trout suspended in the water column can be a painstaking process, as you dial-in the cast, the drift, and fly selection.

Drifting nymphs by sight is most effective in slow current, when you see trout rising off the bottom to feed in the middle of the water column. To approach these trout, cast your flies far enough upstream that you won’t spook the fish, and to allow your flies to sink down to the trout’s level. Once you’ve mended and established your drift, strip in any excess slack and then follow the drifting flies with your rod tip, keeping your nymphs in sight and setting the hook when you see the trout take your fly. Following the nymphs with your rod tip is crucial: Not only does it create an immediate connection with the trout when you set the hook, but it also will let you know approximately where your flies are drifting should you lose sight of them, giving you a chance to blind set if you see the trout feed as your rod tip passes over.

Getting Jiggy

Jigging nymphs is another fantastic way to sight-fish with nymphs, especially when you’re fishing in deep water. The basic technique is to cast a heavy jighead nymph ahead of a cruising fish and then retrieve it with a slow, pulsing  jig-style retrieve. Youcan also drop a nymph in front of a fish suspended off the bottom in deeper water and then jig it vertically to trigger the fish into striking.

I you see a fish swimming through deep water, cast between 5 and 10 feet in front of it. Then, as the fish passes in front of you, slowly lift your rod tip 2 to 3 feet and then let it drop, picking up the extra slack and stripping the fly towards you as it sinks. Usually, the suddenly rising nymph will attract the trout’s attention and cause it to track the fly as it moves through the water. The strike often occurs as soon as the nymph sinks back down.

Jig flies are available inn a wide variety of patterns and sizes. Clockwise from upper left: Black Tungsten Bead Prince Jig, Black Tungsten Bead Tactical Hares Ear Czech Nymph, Tungsten Bead Tactical Olive Hares Ear, and Tungsten Bead Perdigon Tactical Jig. Photos via MidCurrent Marketplace.

When you’re vertically jigging a nymph to a trout, it’s generally to a fish that you can see from either a boat or from a deep drop off along the bank. Trout that are suspending  just above the bottom in the slow or still water are rarely in the mood to feed, but they can be triggered into striking a nymph that’s jigged right in front of their nose. So your presentation needs to be as precise as possible.

Start a jigging presentation by positioning yourself so that the fish is directly beneath your rod tip, allowing you to lower the nymph directly in front of the fish. Once the fly sinks to the fish’s level, start making small, sharp, jigging motions with your rod tip that will cause the nymph to flutter and dance tantalizingly right in the trout’s face. The strike will come as an aggressive grab, which you’ll be able to feel, or as a subtle inhale so try keep your eyes on the fish the entire time you’re jigging, watching for the mouth opening or a subtle movement.

Below the Surface

Sight-fishing with nymphs is a different sort of fly-fishing challenge. It requires a lot of searching and scanning of likely looking water and then making accurate casts and precise presentations to get the trout to strike. Like dry-fly fishing, sight fishing with nymphs is a technique where you have to recognize and understand trout behavior and be able to read fish.

Sight-fishing with nymphs is sometimes the only way you can get trout to eat.

When trout are feeding on dry flies, they’re active and willing to take a fly. These rising fish are obviously catchable, and even when your presentation isn’t exactly perfect, you’re still likely to hook up with one. However, when you’re sight fishing with nymphs, you’re often trying to tempt an inactive fish into feeding with the only indication of success being the trout briefly opening its mouth as your fly drifts by its nose. While sight-fishing with nymphs may not get the same attention or prestige as dry fly fishing, it remains a unique and special way to fish for trout that can and will open up new doors for anglers looking to taking their fly fishing game to the next level.