Critical Caddis by Big Y Fly Co.
Caddis are critical indicator of a rivers health, so what better name to bequeath to this new to Big Y pattern.
Much like our Caddis Emerger, this fly is tied on a curved hook with a peacock thorax, slight wings coming out the top and a soft hackle wrap in the front.
However, the coloration and tying of this fly are quite a bit different. How different? Well ask the fish.
The wings and hackling is grizzly and tied on pretty sparsely. The body is brown and thinly wrapped.
This pattern fishes well in lower and clearer water, especially in its smaller sizes. The opposite is also true in its bigger sizes as long as you can get it near enough to the fish for them to notice its silhouette.
| Specification | Details |
|---|---|
| Hook Type | Curved hook |
| Body Color | Brown |
| Wings & Hackle | Grizzly, sparsely tied |
| Best Use | Lower and clearer waters; smaller sizes for clear water, larger sizes when close to fish |
FAQ
What makes the Critical Caddis different from the Caddis Emerger?
The Critical Caddis has a grizzly wing and hackle tied sparsely, with a brown body and thin wrap, unlike the Caddis Emerger which has a more prominent peacock thorax and fuller hackle.
In what types of water does the Critical Caddis perform best?
It fishes well in lower and clearer water, especially in smaller sizes. Larger sizes work well when presented close to fish in clearer conditions.
Is the Critical Caddis suitable for use in murky waters?
Please contact customer service

Anne Anderson –
Used the Critical Caddis in a clear stream during early spring. The small sizes worked great in the shallow zones. Fish took them immediately, especially when the water was still and transparent. A solid addition to my caddis pattern collection.
Mary MacLeod –
Fished this pattern in a moderate current with clear water. The grizzly wings and sparse hackle made it look natural. It caught a few trout in the mid-stream zones. A bit less effective in deeper, murkier areas.
Yvonne Oliver –
The Critical Caddis matched well with the current conditions. I used it in a small tributary and saw several fish take the small sizes. The thin body and sparse wings made it blend in perfectly.