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  1. Home
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  3. Aquatic Worms
  4. Aquatic Worm

Updated October 31, 2026

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Hatches › Aquatic Worm

Aquatic WormForage

Aquatic Worm

Oligochaeta · subclass

Aquatic worms that live in the riverbed and wash loose when flows rise. A high-water staple on tailwaters and freestones alike.

Overview

Category

Aquatic Worm

Category

Aquatic Worm

Category

The insect or forage category for this profile.

Key stages

Adult

Key stages

Adult

Key stages

Life stages most relevant to fly fishing this hatch or forage.

About Aquatic Worm

Overview in progress

Detailed hatch and forage notes for this profile are being added. Check back for identification, life history, and angler tips.

Also known as: San Juan worm, worm, Oligochaeta

Life Cycle

Adult

Where It Hatches

Aquatic Worm

One species, multiple rivers.

RiverJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
  • Feather River
  • Little Truckee River
  • Truckee River

Eaten By

Rainbow Trout
Rainbow Trout
Smallmouth Bass
Smallmouth Bass
Steelhead
Steelhead
Striped Bass

On this page

OverviewLife CycleWhere It HatchesEaten By

Share & plan

IDFG Planner

On this profile

  • 3 waters
  • 4 predator species
  • 1 life stage

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