What is the best size of zebra midge nymph for rainbow trout on the Kenai River in August?

When it comes to choosing the best size of zebra midge nymph for rainbow trout on the Kenai River in August, it's essential to consider the typical feeding behavior and the natural insects present during that time. Generally, sizes 18 to 22 are effective for zebra midges. However, if we were to pick a single size, a size 20 zebra midge nymph often strikes the perfect balance.

Why Size 20?

1. Versatility: The size 20 zebra midge is small enough to mimic the tiny insects that rainbow trout are accustomed to feeding on but still large enough to be noticed in the water.
2. Natural Match: During August, many of the midges and other aquatic insects in the Kenai River are around this size, making a size 20 an excellent match-the-hatch option.
3. Presentation: A size 20 fly allows for a delicate presentation, which is crucial in clear water conditions where trout can be spooky.

Additional Tips

• Tippet Selection: Use a fine tippet, typically around 5x or 6x, to ensure a natural drift and to avoid spooking the fish. This will allow your midge pattern to move naturally with the current.
• Drift and Depth: Focus on achieving a natural drift just above the riverbed since trout are often looking upwards for food drifting by. Use a small indicator or a dry fly as a strike indicator to help detect subtle takes.
• Color Variations: While black and red are classic colors for zebra midges, experimenting with olive or purple can sometimes yield surprising results, especially in different light conditions.

Recommended Product

For a variety of sizes and colors, consider the 45 Flies Midge Assortment available on Amazon. This set includes a range of effective patterns, perfect for adjusting to different conditions on the Kenai.

With the right size and technique, you’ll be well on your way to a successful day on the river. Remember, fishing is as much about patience and enjoyment as it is about catching fish. Tight lines!