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Flies: Zebra Midge

Black Zebra Midge Fly Pattern
Black Zebra Midge

This is one of those flies that when you show it to an inexperienced angler (and many experienced ones too), the reaction will often be, “What size fish can you catch on that?!?” Whatever size fish is feeding on it. While there is sometimes a little truth to the big fly, big fish theory, fish are going to feed most on the most available food source.

In nearly every tailwater in the world, and certainly in every East Tennessee tailwater, midges are by far the most available food source. They are available to fish nearly 24 hours a day, 365 days a year. And while they may be small, they are abundant and big fish will eat them because they’re such an easy and available meal. More often than not, the first fly I tie on when fishing any tailwater, is some sort of midge.

Big Rainbow Caught on a #18 Zebra Midge
Big fish on a small fly

In freestone streams like you find in the Smokies, we don’t fish midges as much because they’re not as prolific and they are often outnumbered by a variety of mayflies, caddis flies, and stoneflies. So it’s one of those weird ironies that we go to the mountains and fish larger flies for smaller fish and in the tailwaters, we fish smaller flies for larger fish! But they do have seasonal importance in the mountains. They are far more abundant in the late fall and winter than any other time of year.

Midges do hatch into adults but the larval stage is of the most significance to the fly fisherman. You will regularly see trout in the Clinch River tailwater surface feeding on adult midges. However, my experience has been that for every one hit you can get on a topwater midge imitation, you can get about twenty on a nymph. And for me, the number one nymph imitation for a midge is the Zebra Midge.

Zebra Midge Fly Pattern
They can be REALLY small

Midges are rarely bigger than a size #18 and can get a whole lot smaller. I usually fish a size #18 Zebra Midge but will and have gone as small as a #24. You can go as small as you’d like but for me, if catching trout necessitates fishing size #28 flies… It’s time to go to the bar! The smaller the fly, the smaller the tippet you need. And at 45 years of age, I’ve come to the conclusion that trying to thread a #28 hook with 9X tippet and then land a 20”+ fish on that tiny hook and 9X tippet ceases to be fun. Most of the time, a #18 hook on 6X tippet is adequate.

Midges come in a variety of colors and that can vary on a daily basis. Mostly I tie Zebra Midges in red, brown, grey, olive, and black. I fish black more than any color and in the mountains, almost exclusively – maybe olive. I typically tie them with a tungsten bead to get them down quickly. Also, I like to have a few un-weighted ones on hand to fish in the film.

This fly is as simple as it gets. It’s just a bead, thread, and wire. But it is incredibly effective and a must have in any trout fly selection. Try it!

Learn more about Smoky Mountain hatches and flies in my hatch guide.

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Griffith’s Gnat

Griffith's Gnat Fly Pattern
Griffith’s Gnat

Colder months don’t allow for much in the way of dry fly fishing in East Tennessee. When the water temperatures are in the 30’s, it can be tough enough to catch fish on nymphs. But in early March, and during occasional warm stretches in January and February, water temperatures can climb just enough to produce a hatch.

Sometimes in these conditions, particularly on sunny days, bugs may start hatching but fish still opt not to expend the energy to feed on the surface. But there are often isolated areas, mostly slower pools, where they do feed rather methodically on the surface. I just can’t pass an opportunity to catch a fish up top!

There are a variety of insects that are likely to hatch at these times. The most common are black caddis, black stoneflies, black midges, grey midges, and Blue Wing Olive mayflies. There’s not a lot of rhyme or reason to what exactly might be hatching, or which bug the fish might be keying in on. And with the dry fly fishing being so sporadic and unreliable at that time of year, for most, it doesn’t make a lot of sense to buy/tie a bunch of these patterns and carry them on the stream. Most will likely just end up rusting in your box!

Adult Midge
Adult Midge

However, what these insects all have in common is they’re dark in color and small in size. They’re mostly #18 and smaller. The Griffith’s Gnat is a small, dark dry fly generic enough to effectively imitate all of the above insects in most situations. So, rather than carrying four different sizes of six different fly patterns, I tend to carry Griffith’s Gnats in sizes #18 – #22 and am able to fool all but the most selective of trout (and a few of them, too). I once fished a heavy Blue Wing Olive hatch where the fish were actively feeding on the surface. Many were refusing the Blue Wing Olive imitations but eating the Griffith’s Gnat!

It’s just one of those “must-have” flies that I always have in my box, and not just in the winter. It makes for a pretty effective ant imitation during the summer. It’s also a great year round dry fly on tailwaters where midges hatch almost daily. If the fish are feeding on something small and dark, you’ve got more than a fighting chance with this fly.

There are always exceptions, but mostly I fish this fly on a dead drift. I typically use a longer leader and smaller tippet, usually 6X. For a small, dark fly, it’s pretty visible so I often fish it by itself. But in choppier water, in tougher light conditions, or when I just want to give fish options, I will tie it as a dropper off the back of a slightly larger and more visible dry fly. If I tie it 18” off the back of a Parachute Adams, and I see a rise anywhere within 2’ of that Adams, I set the hook.

If you tie your own, it’s a really easy fly to tie. It was always one of the first flies I’d teach when I was teaching beginner fly tying classes. Or if you buy your flies, you can find them almost anywhere. Give it a try!

Learn more about Smoky Mountain hatches and flies in my hatch guide.