Chironomids (Midges)

Overview

Chironomids, or midges, are small, non-biting flies (order Diptera) found in nearly every freshwater habitat. They're a key food source for fish, especially in the larval and pupal stages, hatching year-round and often heaviest on overcast days or in cooler water. Their small size and sheer abundance make them a staple of a trout's diet.

Nymph

Midge larvae run 0.2 to 0.5 inches, slender and segmented, in olive, brown, or black. They're found on the substrate of lakes and rivers, living in the muck or clinging to rocks. Hook sizes: 18 to 22, most often tied in black, olive, or brown.

Dry/Adult

Adult midges are tiny, around 0.2 to 0.5 inches, with delicate clear wings in gray, black, or olive. Large adult hatches are most noticeable near the surface in early morning or late evening. Hook sizes: 18 to 24. Common patterns include the Griffith's Gnat and parachute-style ties, matching the fly's small size and low-riding profile to the natural's emergence.

Curated by the IdentaFly fly fishing team.