October caddis
Also called October Caddis, Fall caddis
October caddis is a large, orange fall caddisfly hatch, best known on Western trout rivers where adults flutter along banks and skitter on the surface.
- Group
- Stonefly & caddis hatches
- Category
- Entomology & forage
- Level
- Intermediate
- Water
- Freshwater
Last updated
What October caddis means
The name “October caddis” is used for a group of big, orange caddisflies that show up in the fall. Anglers usually mean the adult insects you see fluttering low along the bank, plus the big larvae that live in the stream for much of the year.
Fishing it is often a bank game. Adults tend to pop up tight to the edges, especially around brushy banks, undercut dirt, and slower margins next to faster current. Fly choices usually split into two lanes: an orange dry fly that can be skated or twitched near the bank, and a large caddis larva pattern fished deeper earlier in the day.
Not every river has them, and timing varies by drainage and elevation. Where they exist, the hatch can be noticeable because the bugs are large and easy to see, even when trout are not feeding recklessly.
Why it matters on the water
It gives a clear reason to fish the last few feet of water that many people walk past. Instead of spreading casts across the whole run, you can work the edges methodically, covering undercut banks and soft seams with short, accurate presentations.
It also explains why a “caddis day” can look slow until the right window. When adults are not active, a big larva imitation can still be the better tell, especially in pockety runs and along the same banks where the adults later show up.
Read next
- CaddisflyA caddisfly is a common freshwater insect that trout and other fish eat in its larva, pupa, and adult stages. Many species live in streams and rivers, and their hatches can drive steady feeding.
- Dry flyA dry fly is a floating fly meant to be fished on the surface, where you can see it and the take.
- Elk Hair CaddisA buoyant caddis adult imitation tied with elk hair for the wing. It’s a standard dry fly for caddis hatches and as a general searching pattern.
- NymphA nymph is a subsurface fly meant to imitate an aquatic insect in its immature stage, or a small food item drifting in the current. Nymphs are fished with or without weight, an indicator, or tight-line methods.