Using nymphs for subsurface fishing is a highly effective fly fishing technique because nymphs mimic the immature stages of insects that fish feed on below the water's surface. Here's a step-by-step guide on how to fish with nymphs successfully:
1. Understand Why Nymphs Work- Fish Feed Primarily Below the Surface: About 80% of a fish's diet comes from underwater sources, which is why nymphs can be so effective. These flies imitate insect larvae, pupae, and other aquatic creatures that fish feed on naturally.
- Year-Round Success: Nymphs are effective all year long, regardless of whether fish are rising to the surface.
- Match the Hatch: Observe the insects in the water or on the banks to choose a nymph that closely resembles what fish are naturally eating. Different waters have different hatches, so it's important to be aware of local conditions.
- Popular Nymph Patterns: Some tried-and-true nymph patterns include the Pheasant Tail, Hare's Ear, Copper John, and Prince Nymph. These flies imitate a wide range of aquatic insects.
- Tippet and Leader: Use a tapered leader (around 9 to 12 feet) with a thinner tippet at the end (around 4X to 6X depending on conditions) for a natural presentation. The thinner the tippet, the less visible it will be to the fish.
- Weighting the Nymph: Depending on the water depth and current speed, you may need to add split shot weights or use a beadhead nymph to help your fly sink to the right level. The goal is to get your nymph down to where the fish are feeding.
- What It Does: A strike indicator (similar to a bobber) helps you detect subtle bites. Fish often take nymphs gently, so the indicator will show the slightest movement when a fish strikes.
- Positioning the Indicator: Place the strike indicator about 1.5 to 2 times the depth of the water from the fly. For example, if the water is 3 feet deep, position the indicator about 4.5 to 6 feet above the fly to allow the nymph to drift naturally near the bottom.
- Natural Drift: The key to nymph fishing is to allow the nymph to drift naturally with the current, just as a real insect would. To do this, make sure there is no tension on the line that could cause the nymph to move unnaturally (a drag-free drift).
- Mending the Line: To maintain a natural drift, you'll need to periodically "mend" the line. This means lifting and repositioning the slack line upstream to prevent drag and keep the fly drifting naturally.
- Fish Near the Bottom: Fish usually hold near the bottom, so it's important to get your nymph down deep. Focus on areas behind rocks, in eddies, and near underwater structures where fish may be holding.
- Riffles and Pools: Fish often feed in riffles (shallow, fast-moving water) or at the edges of deeper pools where food drifts down from the current. Cast your nymph slightly upstream and let it drift into these areas.
- Watch the Indicator: Pay close attention to your strike indicator. Even a small twitch or hesitation can indicate a fish has taken the nymph. If the indicator stops, moves against the current, or dips suddenly, set the hook immediately.
- No Indicator? Watch the Line: If you're not using a strike indicator, keep a close eye on the end of your line. Any unnatural movement in the line could be a fish taking the fly.
- Double Your Chances: Try fishing with a tandem nymph rig, which means tying on two nymphs at different depths. The top fly might be a heavier nymph to help sink the rig, while the bottom fly is lighter and drifts naturally. This increases your chances of matching what fish are feeding on.
- Spacing: Tie the second nymph about 12-18 inches below the first fly using a dropper loop or by tying it to the bend of the first hook.
- Set the Hook Quickly: When you detect a strike, set the hook quickly but gently. Since nymphs are often small and fish tend to take them softly, you don't need to use a hard hook set.
- Keep Tension: Once you hook a fish, keep a consistent tension on the line to avoid losing it, especially if you're using a smaller hook.
- Change Depths Frequently: If you're not catching fish, try adjusting the depth of your fly by moving the strike indicator up or down. Fish may be holding deeper or shallower than you initially expected.
- Adjust Weight for Current: In faster currents, you may need to add more weight to your line to keep the nymph at the right depth. In slower currents, reduce the weight so your fly drifts naturally.
- Stay Focused: Nymph fishing requires patience and close attention. Strikes can be subtle, and it might take time to perfect your drift and depth. Keep practicing your presentations and don't be afraid to switch up your nymph patterns if fish aren't biting.
By following these tips and mastering subsurface fishing with nymphs, you'll greatly increase your chances of success in fly fishing, particularly when fish are not actively feeding on the surface.