Caddis Fly Fishing: Hatches, Patterns & Life Cycle Guide

Description

Caddisflies are one of the most important aquatic insects for trout anglers. Found in virtually every trout stream, they provide a consistent food source year-round. Unlike mayflies, caddis are closely related to moths (notice the tent-shaped wings) and undergo a complete metamorphosis (Egg -> Larva -> Pupa -> Adult).

Life Cycle Stages

Larva

Caddis larvae are bottom dwellers. Some build portable cases (homes) out of sand, sticks, or rocks, while others spin nets or roam freely. They are available to trout year-round.

Recommended Fly Patterns

Hare's Ear Jig

#10-#18

Natural, Olive, Brown, Black

Spanish Bullet Perdigon

#14-#18

Olive, Brown, Copper, Black

Green Weenie

#10-#14

Chartreuse, Green

Czech Nymph (Caddis Variant)

#12-#16

Olive/Tan, Green/Tan

LaFontaine's Green Caddis Larva

#12-#16

Green, Olive

Chimarra Larva

#16-#20

Orange, Amber, Yellow

Green Caddis Larva

#12-#18

Green, Olive, Chartreuse

Caddis Larva

#12-#18

Olive, Tan, Brown, Gray

Buckskin

#14-#18

Tan, Cream, Olive

Pupa

The rising pupa stage. Fast ascent to surface where they hang briefly before hatching.

Recommended Fly Patterns

Klinkhammer Special

#12-#18

Tan, Olive, Peacock, Black

Soft Hackle Hare's Ear

#12-#16

Natural, Olive, Orange

Silvey's Caddis Pupa

#14-#16

Olive, Tan

LaFontaine's Sparkle Pupa

#14-#18

Green, Olive, Tan

Soft Hackle Caddis

#12-#16

Orange, Tan, Olive, Brown

Z-Wing Caddis

#14-#18

Olive, Tan, Brown

Graphic Caddis

#14-#18

Olive, Tan

Adult

Adults resemble moths with tent-shaped wings that fold over their back. They are active runners on the water surface ("skittering").

Recommended Fly Patterns

Garcia's Mother's Day Caddis

#14-#16

Black, Chartreuse

Elk Hair Caddis

#8-#18

Tan, Olive, Brown, Orange, Yellow

Missing Link Caddis

#14-#18

Amber, Dark, Tan

X-Caddis

#14-#18

Tan, Olive, Brown

Madam X

#8-#14

Yellow, Olive, Tan, Brown

Habitat

Caddisflies inhabit virtually all types of trout water:

Riffles: Net-spinners (Hydropsyche) attach to rocks in fast water.
Runs: Case-makers prefer moderate flow areas.
Pools: Free-living larvae (Rhyacophila) hunt in slower water.
Weed beds: Many species thrive in vegetation.
Substrate: Clean gravel and rocky substrates support the highest diversity and abundance.

Behavior

Caddis hatches often occur in the afternoon and evening:

Spring hatches: 2 PM - 6 PM (Grannom Caddis)
Summer hatches: 4 PM - 8 PM (Various species)
Fall hatches: 3 PM - 7 PM (October Caddis)

Adults are active fliers and often seen flying upstream to lay eggs. Egg-laying flights create "caddis blizzards" with thousands of insects on the water.

Fishing Information

Matching the Hatch

Identify the feeding behavior:

Slashing rises: Trout chasing emerging pupae (fast/aggressive).
Splashy rises: Adults being taken on surface.
Boiling rises: Fish chasing egg-laying females.
Quiet sips: Spent caddis after egg-laying.

Best Fly Patterns

Recommended fly patterns for each life stage are displayed above with images from our database.

Best Seasons

Spring (April-May): Mother's Day Caddis (Grannom) (#14-16)
Summer (June-August): Spotted Sedge, Little Sister Sedge (#14-18)
Fall (September-October): October Caddis (#6-10), Micro Caddis (#18-20)

Techniques

Active drift: Twitch and skate adult patterns.
Swing soft hackles: Classic wet fly technique for emerging pupae.
Lift at end of drift: Imitates rising pupa (Leisenring Lift).
Skating dries: Skitter adults across surface.
High-stick nymphing: For dislodged larvae in fast water.

Special Tactics

The Sudden Inch: At the end of a dead drift, give a sharp, short twitch to imitate a pupa darting toward the surface. This often triggers explosive strikes.

Skating/Waking: Drag adult patterns across the surface, especially during heavy hatches or for aggressive fish.