AI Advisor

Fly Pattern Recommender

Tell us the conditions and we'll match a fly, tippet, and presentation. Powered by AI tuned for trout — with a guide-built fallback.

Conditions
When
Pick gauge from map for live conditions
Fly Type
Sky
Time of Day
Water Temp · 58°F
Flow · 180 CFS
Recommendation
Set conditions and tap "Get Recommendation."
Pattern Library

130 essential patterns

Zebra Midge
Nymph · Hook #18-22
Cold water, slow pools
Year-round
Mercury Midge
Nymph · Hook #18-22
Tailwaters, slow seams
Year-round
WD-40
Emerger · Hook #18-22
Tailwaters, midges
Year-round
Griffith's Gnat
Dry · Hook #18-22
Midge clusters
Year-round
Blue Wing Olive
Dry · Hook #18-22
Overcast, 50-60°F
Spring/Fall
BWO Emerger
Emerger · Hook #18-22
BWO hatches
Spring/Fall
RS2
Emerger · Hook #18-22
BWO hatches, overcast
Spring/Fall
JuJu Baetis
Emerger · Hook #18-22
Picky tailwater BWO fish
Spring/Fall
Pale Morning Dun
Dry · Hook #16-18
Midday hatches, 55-65°F
Summer
Sulphur Dun
Dry · Hook #14-18
Eastern PMD-like hatches
Late spring/Summer
Trico
Dry · Hook #20-24
Morning spinner falls
Late summer
Sparkle Dun
Dry · Hook #14-20
Mayfly emergences, flat water
Spring/Summer
Comparadun
Dry · Hook #12-20
Selective fish, mayfly hatches
Spring/Summer
Klinkhammer
Emerger · Hook #12-18
Mayfly emergence, flat water
Spring/Summer
Green Drake
Dry · Hook #10-12
Big mayfly hatches
Late spring
March Brown
Dry · Hook #10-14
Cool overcast Apr-May
Spring
Adams
Dry · Hook #12-20
Generic mayfly imitation
Year-round
Purple Haze
Dry · Hook #12-18
Western attractor, pocket water
Summer
Elk Hair Caddis
Dry · Hook #12-18
Caddis hatches, evening
Summer/Fall
Sparkle Pupa
Emerger · Hook #14-18
Caddis emergence, last hour
Spring/Summer
Tan Caddis Pupa
Emerger · Hook #14-18
Caddis emergence, swung wet
Summer
Salmonfly
Dry · Hook #4-8
Pteronarcys hatch, big Western rivers
Late spring/Early summer
Yellow Sally
Dry · Hook #14-16
Little yellow stonefly hatch, riffles
Summer
Yellow Sally Nymph
Nymph · Hook #14-16
Pre-hatch yellow stonefly
Summer
Skwala
Dry · Hook #8-10
Skwala hatch, March-April
Late winter/Early spring
Black Stonefly Dry
Dry · Hook #6-10
Adult stonefly, banks and seams
Spring
Pat's Rubber Legs
Nymph · Hook #4-10
Stoneflies, big rivers, runoff
Year-round
Girdle Bug
Nymph · Hook #4-8
Big stonefly searching nymph
Year-round
Kaufmann's Stone
Nymph · Hook #6-10
Big stonefly nymph, deep fast water
Year-round
Golden Stone
Nymph · Hook #6-10
Golden stonefly, Western rivers
Spring/Summer
Iron Sally
Nymph · Hook #12-16
Golden stonefly, summer rivers
Summer
Pheasant Tail
Nymph · Hook #14-20
Riffles, mayfly hatches
Year-round
Hare's Ear
Nymph · Hook #12-18
All water types
Year-round
Copper John
Nymph · Hook #14-18
Heavy nymph, deep
Year-round
Prince Nymph
Nymph · Hook #12-18
Searching pattern, riffles
Year-round
Lightning Bug
Nymph · Hook #14-18
Flashy attractor nymph
Year-round
Frenchie
Nymph · Hook #14-18
Euro-nymphing, hot-spot attractor
Year-round
Perdigon
Nymph · Hook #14-20
Fast deep water, sinks fast
Year-round
Rainbow Warrior
Nymph · Hook #16-20
Tailwaters, flashy attractor
Year-round
Higa's SOS
Nymph · Hook #14-18
Searching nymph, all water
Year-round
Walt's Worm
Nymph · Hook #12-18
Searching nymph, all water
Year-round
Two-Bit Hooker
Nymph · Hook #16-20
Deep runs, double-bead weight
Year-round
Czech Nymph
Nymph · Hook #10-14
Euro-nymphing, deep fast water
Year-round
Yum Yum
Nymph · Hook #14-18
Tailwater rainbow attractor
Year-round
Scud
Nymph · Hook #14-18
Tailwaters, weed beds, lakes
Year-round
San Juan Worm
Nymph · Hook #10-14
High/dirty water
Spring runoff
Squirmy Worm
Nymph · Hook #10-14
High/dirty water, after rain
Year-round
Mop Fly
Nymph · Hook #10-14
Stained water, searching
Year-round
Y2K Egg
Nymph · Hook #12-16
Behind spawning fish
Fall/Spring spawn
Dave's Hopper
Terrestrial · Hook #8-12
Bank water, >65°F
Summer
Morrish Hopper
Terrestrial · Hook #8-12
Banks, late summer, >65°F
Summer
Foam Beetle
Terrestrial · Hook #12-16
Calm water, sunny
Summer
Chubby Chernobyl
Terrestrial · Hook #8-12
Hopper season, big foam
Summer
Chernobyl Ant
Terrestrial · Hook #8-12
Hopper/stonefly attractor
Summer
Hippie Stomper
Terrestrial · Hook #10-14
Western attractor, hopper-dropper
Summer
Stimulator
Dry · Hook #8-14
Pocket water, attractor
Summer
Royal Wulff
Dry · Hook #10-16
Fast water, attractor
Summer
Soft Hackle
Wet · Hook #12-16
Swung across riffles
Summer/Fall
Woolly Bugger
Streamer · Hook #4-10
High flows, big fish
Year-round
Black Woolly Bugger
Streamer · Hook #4-10
Universal streamer
Year-round
Crystal Woolly Bugger
Streamer · Hook #6-10
Stained water, flashy attractor
Year-round
Conehead Woolly Bugger
Streamer · Hook #6-10
Deep runs, fast sink
Year-round
Sculpzilla
Streamer · Hook #4-8
Pre-spawn fall, big water
Year-round
Slumpbuster
Streamer · Hook #4-8
Sculpin imitation, dredge deep
Year-round
Sex Dungeon
Streamer · Hook #2-4
Big browns, articulated
Year-round
Egg-Sucking Leech
Streamer · Hook #4-8
Pre-spawn, big trout, swung
Fall/Winter
Black Leech
Streamer · Hook #6-10
Lakes, slow rivers, swung deep
Year-round
Mickey Finn
Streamer · Hook #4-10
Brook trout, classic attractor
Year-round
Zonker
Streamer · Hook #4-8
Baitfish imitation, deep pools
Year-round
Muddler Minnow
Streamer · Hook #4-10
Sculpin/grasshopper, dead-drift or skate
Summer/Fall
Parachute Adams
Dry · Hook #12-22
Any mayfly hatch, broken water, low light, picky risers
Year-round (peaks April-October)
CDC Caddis
Dry · Hook #14-20
Caddis hatches, flat or slow water, selective risers, evening rise
April-October (peaks May-July)
X-Caddis
Emerger · Hook #14-18
Active caddis hatch, fish refusing adult caddis, riffles into pools
May-September (peaks during caddis hatches)
Goddard Caddis
Dry · Hook #10-16
Choppy water, riffles, freestone rivers, evening egg-laying flights
June-September (evening caddis flights)
Hexagenia
Dry · Hook #6-10 (3XL or 4XL hooks)
Silt-bottom rivers and lakes, dusk to midnight, calm water, Hex hatch
Late June through July (evening into dark)
Isonychia
Dry · Hook #10-14
Eastern and Midwestern freestones, riffles into runs, late afternoon
June through October (two emergences)
Mahogany Dun
Dry · Hook #16-18
Cloudy fall afternoons, slow tailouts, mixed BWO hatches
September through October (peak fall hatch)
Quill Gordon
Dry · Hook #12-14
Eastern freestones, water 50-55°F, cloudy afternoons, riffle-pool transitions
April (first warm afternoons after snowmelt)
Tungsten Jig Hare's Ear
Nymph · Hook #12-18
Pocket water, deep runs, Euro nymphing, freestone rivers
Year-round
Mop Jig
Nymph · Hook #10-14
High water, runoff, stained tailwaters, stocked trout
Year-round (peaks in high or stained water)
Foam Ant
Terrestrial · Hook #12-18
Summer afternoons, banks, overhanging grass, flat water, flying-ant falls
June-September
Cricket
Terrestrial · Hook #10-14
Meadow streams, grassy banks, undercut banks, late summer afternoons
July-September
Fat Albert
Terrestrial · Hook #6-12
Western banks, riffles, pocket water, hopper season, dropper rigs
July-October
Sparkle Minnow
Streamer · Hook #4-8
Banks, cutbanks, pocket water, stained water, streamer fishing days
Year-round (best spring, fall, and high water)
Clouser Minnow
Streamer · Hook #2-8
Baitfish water, lakes, rivers, warmwater, trout, bass, saltwater flats
Year-round (especially spring and fall)
Barr's BWO Emerger
Emerger · Hook #18-22
Cloudy BWO hatches, tailwaters, flat glides, selective risers
Spring and fall
Top Secret Midge
Emerger · Hook #20-26
Tailwaters, winter midge hatches, flat slicks, selective trout
Year-round (especially winter)
Callibaetis Cripple
Emerger · Hook #14-18
Lakes, ponds, slow backwaters, windy chop on stillwater
Late spring through early fall
Damselfly Nymph
Nymph · Hook #10-14
Weedy lakes, ponds, shallow flats, reeds, slow edges
May-August
Balanced Leech
Streamer · Hook #8-12
Lakes, chironomid rigs, indicators, deep shoals, suspended fish
Year-round (best spring and fall)
Ray Charles Sowbug
Nymph · Hook #14-18
Tailwaters, spring creeks, weedy slow runs, Bighorn-style rivers
Year-round (especially fall and winter)
UV Pink Scud
Nymph · Hook #12-16
Tailwaters, spring creeks, weedy lakes, slow shoals
Year-round (best in tailwaters and stillwater spring/fall)
Rainbow Czech Nymph
Nymph · Hook #10-14
Fast pocket water, deep runs, Euro-nymphing, broken riffles
Year-round
Trombone
Streamer · Hook #2-4 (articulated, 3.5-5" overall)
Big water, low-light, off-color flows, trophy hunting for big browns
Spring and fall (pre-spawn brown trout)
Goldie
Streamer · Hook #2-4 (articulated, 4-5" overall)
Trophy water, deep runs, undercut banks, big rivers and tailwaters
Year-round (best fall pre-spawn)
Dirty Hippy
Streamer · Hook #2-6 (articulated, 3.5-4.5" overall)
Stained water, deep runs, lakes, big rivers, trout on the hunt
Year-round (especially fall and spring)
Butt Monkey
Streamer · Hook #2-4 (articulated, 4-5" overall)
Big water, low light, deep runs, trophy hunting
Year-round (especially pre-spawn fall)
Wire Worm
Nymph · Hook #10-14
High flows, stained water, tailwaters, deep runs
Year-round (essential during runoff and high water)
Mini Leech
Streamer · Hook #10-14
Tailwaters, stillwater, trout spey, swung-fly water, indicator rigs
Year-round
Otter Egg
Nymph · Hook #12-16
Spawning runs, tailwaters below spawning beds, Great Lakes tribs, alpine lake inlets
Fall and spring (during and after spawn)
Blowtorch
Nymph · Hook #14-18
Euro nymphing, pocket water, fast runs, pressured trout
Year-round
Blowtorch Peacock Variation
Nymph · Hook #14-18
Clear to slightly stained rivers, fast runs, technical Euro water
Year-round
Lite Brite Perdigon
Nymph · Hook #14-20
Fast riffles, deep slots, technical tailwaters, Euro nymphing
Year-round
Quilldigon
Nymph · Hook #14-20
Clear water, selective trout, Euro nymphing, spring creeks and tailwaters
Year-round
Surveyor
Nymph · Hook #12-16
Pocket water, broken riffles, Euro rigs, searching new water
Year-round
Red Dart
Nymph · Hook #14-18
Tailwaters, Euro rigs, cold water, deep runs
Year-round (especially winter and high water)
Tungsten Jig Bugger
Streamer · Hook #6-10
Deep runs, Euro streamer rigs, lakes, swing water, high water
Year-round
Mayer's Mini Leech Jig
Streamer · Hook #10-14
Euro streamer rigs, lakes, tailwaters, slow runs, indicator rigs
Year-round
Back Flop Jig
Streamer · Hook #4-8 (articulated)
Euro streamer fishing, deep banks, bouldery rivers, trout looking for bigger meals
Year-round (especially spring and fall)
Corn-Fed Caddis CDC
Dry · Hook #14-18
Caddis hatches, riffles, broken water, evening rises
Spring through fall
Egan's Rainbow Warrior
Nymph · Hook #16-20
Tailwaters, clear water, technical trout, dropper rigs, Euro rigs
Year-round
Egan's Frenchie
Nymph · Hook #12-18
Euro rigs, tailwaters, freestone runs, fast water
Year-round
Bionic Ant
Dry · Hook #14-18
Terrestrial season, banks, slow pools, hopper-dropper rigs, sight-fishing
Late spring through early fall
Egan's Poacher
Nymph · Hook #14-18
Mayfly hatches, swung wet flies, Euro rigs, tailwaters
Spring through fall
Silver Bullet
Nymph · Hook #14-18
Cold tailwaters, deep runs, Euro rigs, off-color water
Year-round (especially winter and high water)
GTI Caddis
Nymph · Hook #12-16
Caddis water, freestone rivers, riffles, runs, Euro rigs
Spring through fall
Egan's Tailwater Sowbug
Nymph · Hook #14-18
Tailwaters, weed-rich rivers, technical trout, dropper rigs
Year-round
Egan's Dart
Nymph · Hook #14-18
Euro rigs, deep runs, fast water, tailwaters, off-color water
Year-round
Egan's Warrior Perdigon
Nymph · Hook #14-18
Euro rigs, fast water, deep runs, clear tailwaters
Year-round
Spruce Moth
Dry · Hook #10-14
Western freestone rivers near spruce/fir forests, broken water, banks, evening rises
Mid-July through August
Mother Shucker
Emerger · Hook #14-18
Riffle tailouts, foam lines, broken water during emergences
Spring through fall, peak during caddis and PMD hatches
Royal Coachman
Wet · Hook #10-16
Small streams, broken water, brook and cutthroat water, searching unknown water
Summer, especially mountain streams and brook trout water
Hare's Ear Wet Fly
Wet · Hook #12-16
Riffles, runs, swing water, classic Eastern freestone streams
Spring through fall during mayfly and caddis activity
Light Cahill
Dry · Hook #12-16
Eastern freestone streams, evening hatches, slow pools, classic Catskill water
Late spring through summer, peak in evening hatches
Black Gnat
Wet · Hook #12-18
Small streams, slow pools, after rains when terrestrials wash in
Spring through fall, especially after rain
Renegade
Dry · Hook #12-18
Mountain streams, high lakes, riffles, broken water, cutthroat and brook trout water
Year-round, classic high-country summer fly
Galloup's Boogie Man
Streamer · Hook #2-4 articulated, 4-6 inches total
Big rivers, streamer water, off-color flows, low light, hunting big browns
Pre-spawn spring, fall, high or off-color water
Galloup's Heifer Groomer
Streamer · Hook #2-4 articulated, 4-5 inches total
Big freestones, tailwaters, deep runs, sculpin water
Spring and fall, pre-spawn brown trout season
Galloup's Peanut Envy
Streamer · Hook #4-6 articulated, 3-4 inches total
Smaller rivers, pressured water, when full-size streamers are too big
Year-round streamer fishing, especially fall
Galloup's Zoo Cougar
Streamer · Hook #2-4, 3-4 inches
Sculpin water, deep runs, undercut banks, big-trout water
Spring through fall, peak in pre-spawn brown trout season
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