Fly Fishing Other Aquatic Patterns & Hatches Guide

Description

While Mayflies, Caddisflies, and Stoneflies get all the glory, the "Other Aquatic" category contains some of the most consistent calorie sources for trout. This group includes Crustaceans (Scuds, Sowbugs, Crayfish, Mysis Shrimp), Annelids (Leeches, Aquatic Worms), Odonates (Damselflies, Dragonflies), and seasonal biomass like Fish Eggs.

These invertebrates are often available year-round and are less dependent on specific "hatches," making them reliable go-to patterns when surface activity is slow.

Fly Pattern Categories

Scuds & Sowbugs

Consistent year-round food sources in tailwaters and spring creeks. These crustaceans are high-protein staples for trout.

Recommended Fly Patterns

Scud

#14-#20

Olive, Tan, Gray, Orange

Aquatic Worms & Leeches

Reliable patterns for off-color water and deep pools. San Juan worms and Woolly Buggers are essential in every fly box.

Recommended Fly Patterns

Squirmy Worm

#10-#14

Pink, Red, Tan

San Juan Worm

#10-#16

Red, Pink, Wine, Brown

Neon Nightmare

#12-#16

Neon Pink, Cream

Crustaceans (Crayfish)

Large calorie sources that trigger aggressive strikes from trophy brown trout. Best fished deep with a stripping retrieve.

Recommended Fly Patterns

Home Invader

#2-#8

Olive/Brown, Black/Purple, White/Chartreuse

Clouser Cray

#4-#10

Olive/Brown, Tan/Orange, Rusty Brown

Zirdle Bug

#2-#8

Olive/Orange, Brown/Orange, Natural

Odonates (Damsels & Dragons)

Migrating nymphs trigger some of the most aggressive feeding in stillwaters. Essential for lake fishing.

Recommended Fly Patterns

Thunder Thighs Hopper

#6-#12

Black, Pink, Tan, Yellow

Charlie Boy Hopper

#8-#14

Tan, Yellow, Olive, Brown

Hippie Stomper

#10-#14

Black, Purple, Red, Olive, Tan

Madam X

#8-#14

Yellow, Olive, Tan, Brown

Fat Albert

#6-#12

Black, Purple, Tan, Yellow

Dave’s Hopper

#6-#12

Yellow, Tan, Olive, Brown

Morrish Hopper

#6-#12

Tan/Brown, Tan/Yellow, Olive

Parachute Ant

#14-#20

Black, Cinnamon, Brown

Chubby Chernobyl

#6-#14

Tan, Gold, Olive, Purple, Black, Yellow

Schroeder’s Parachute Hopper

#10-#14

Olive, Tan, Brown, White Post

Sofa Pillow

#4-#10

Orange/Brown

Salmonfly Adult

#4-#10

Black, Brown, Orange

Amy's Ant

#10-#14

Tan, Olive, Red

Foam Beetle

#12-#18

Black, Olive

Chernobyl Ant

#8-#16

Black, Brown, Tan, Orange Indicator

Habitat

These food sources are found in diverse environments:

Scuds/Sowbugs/Mysis: Thrive in vegetation-rich tailwaters and spring creeks.
Crayfish/Leeches/Worms: Common in almost every river and stillwater environment.
Damsels/Dragons: Apex predators of the insect world, found primarily in lakes and ponds.

Behavior

Understanding the specific movement is key:

Crustaceans: Scuds and sowbugs drift near the bottom. Crayfish flee backward.
Leeches: Swim with an undulating rhythm.
Odonates: Migrate to shore to hatch, triggering aggressive strikes.

Fishing Information

Tactics

Nymphing: The primary method for scuds, sowbugs, and eggs. Fish deep and use enough weight.
Streamers: Woolly Buggers (Leeches) and crayfish patterns should be stripped to mimic swimming or fleeing motion.
Stillwater: Focus on weed lines and drop-offs where these invertebrates congregate.

Conservation Status

Many of these species, especially scuds and sowbugs, are indicators of water quality. Invasive species (like Rusty Crayfish) can disrupt local ecosystems.