{
  "url": "https://theflybench.com/patterns/caddis-larva",
  "id": "cm8v25j0j008husxb1u4c4j1h",
  "title": "Caddis Larva",
  "slug": "caddis-larva",
  "description": "The Caddis Larva fly is designed to mimic the natural caddis larvae found in many bodies of water. It's a staple in the diet of many fish, making this fly a go-to choice for many anglers. Its realistic profile and natural movement in the water make it irresistible to fish.",
  "imitates": "Caddis Larvae",
  "patternCategory": "nymph",
  "difficulty": "Intermediate",
  "targetSpecies": "Trout",
  "waterTypes": [
    "Stillwater",
    "Moving Water"
  ],
  "seasons": [
    "Spring",
    "Summer",
    "Fall"
  ],
  "materials": "**Hook**: Tiemco 3769, size #12–#16\n**Thread**: Olive Ultra Thread 70\n**Body**: Olive Hare's Ear Plus Dubbing\n**Ribbing**: Gold Ultra Wire\n**Shellback**: Strip of Thin Skin in mottled olive",
  "images": [
    {
      "url": "/images/patterns/nymph/caddis-larva.webp",
      "source": "The Fly Bench"
    }
  ],
  "videos": [
    {
      "url": "https://www.youtube.com/watch?v=OccYKGEYDmQ",
      "label": "Tightline Productions"
    }
  ],
  "createdAt": "2025-03-29T22:20:16.302Z",
  "updatedAt": "2025-04-06T03:25:21.403Z",
  "variantOf": "",
  "regions": [
    "Worldwide"
  ],
  "waters": [],
  "tags": [
    "dead-drift",
    "indicator-nymph",
    "caddis-hatch",
    "guide-fly"
  ],
  "essential": false,
  "tier": "",
  "entomology": {
    "order": "Trichoptera",
    "family": "",
    "commonName": "Caddisfly",
    "organismType": "insect",
    "lifeStage": "larva",
    "behavior": "Free-living caddisfly larvae crawl actively across the bottom substrates, grazing on algae and organic matter without the protection of a case, making them vulnerable to predation. Case-building species occasionally abandon damaged cases or are dislodged during high flows, exposing the soft-bodied larva. Trout root along the bottom and turn rocks specifically to access these larvae, which represent abundant, year-round protein sources in cold-water streams."
  },
  "relatedPatterns": [
    {
      "slug": "barr-s-hare-copper",
      "type": "same-hatch"
    },
    {
      "slug": "biot-soft-hackle",
      "type": "same-hatch"
    },
    {
      "slug": "barr-s-jumbo-john",
      "type": "same-hatch"
    },
    {
      "slug": "caddis-poopah",
      "type": "same-hatch"
    },
    {
      "slug": "iris-caddis",
      "type": "same-hatch"
    },
    {
      "slug": "barr-s-net-builder",
      "type": "alternative"
    },
    {
      "slug": "bird-s-nest",
      "type": "alternative"
    },
    {
      "slug": "chimarra-caddis-larva",
      "type": "alternative"
    }
  ],
  "behaviorPresentation": "**Natural Behavior**: Free-living larvae crawl exposed across bottom substrates while case-builders occasionally abandon damaged shelters, both becoming vulnerable when dislodged during high flows.\n**Where Trout Eat It**: Fish root along the bottom and turn rocks to access these year-round protein sources, feeding opportunistically when larvae are exposed.\n**How to Fish It**: Bounce along substrate with a dead drift, imitating larvae tumbling helplessly after dislodgement or crawling between feeding positions.\n**Best Water**: Target gravel runs, pocket water, undercut banks, and riffle edges where current exposes or dislodges bottom-dwelling larvae.\n**Strike Type**: Takes feel like resistance or weight as fish pick larvae off the bottom during drift-feeding.",
  "fishingStrategy": "**Rigging Suggestions**: Use 5X-6X tippet with a tandem nymph rig, pairing with a heavier beadhead fly as the point to reach 2-6 feet depths quickly. Add split shot if needed in faster currents. **Seasonal Timing**: Effective from April through October with peak productivity during May-September when larvae are building cases and preparing to pupate. Works well when water temperatures are 45-65°F. **Pro Tips**: This fly works best when bouncing along the bottom. Match your larva color to local specimens—tan, olive, or cream variations. The natural segmentation triggers confident takes from selective feeders.",
  "overview": "Tied to imitate the free-living or case-building caddis larva, this nymph often uses a green or olive dubbed body, ribbing for segmentation, and a black head. A soft hackle collar can add movement. Weighted with lead wraps or a bead, it's an essential pattern for year-round subsurface fishing."
}