1. **Size 10-14**: These larger nymphs are great for targeting bigger fish, such as trout in faster waters or during the spring when they are actively feeding. For example, a size 12 Pheasant Tail Nymph can be very effective in streams with good current.
2. **Size 16-18**: These mid-range sizes are versatile and work well in various conditions. They are particularly effective during hatches when fish are feeding on smaller insects. A size 16 Hare's Ear Nymph is often a go-to choice for many anglers.
3. **Size 20-22**: These smaller nymphs are ideal for pressured waters or during times when fish are being selective. If you’re fishing in a river with a lot of small mayflies, consider using a size 22 Blue-Winged Olive Nymph to match the hatch.
Additionally, consider the clarity of the water and the time of year. In murky waters, larger nymphs can attract attention, while in clear waters, smaller and more natural-looking nymphs may yield better results. Always keep an eye on what the fish are feeding on and adjust your nymph size accordingly. Happy fishing!
This answer doesn't make sense or isn't related to the question. Mark it as a probable hallucination of the AI model.