In almost every river or stream that I have ever sampled for aquatic inverts I have found multiple species of caddis larva. However much we all love to fish the beautifully tied mayfly and stonefly nymphs, caddis larva make up a huge portion of a trout’s diet. There are many imitations out there, but the Czech Nymph is my go-to caddis larva. Not to mention that it can double for a cranefly larva, or any other grub style invertebrate that finds itself floating down a trout stream.
You can tie this pattern in a multitude of color variations, either as natural, or as flashy as you desire. The tan-pink-brown variation is usually the first Czech Nymph I tie on. I prefer to fish if in sizes 8-14 with sizes 8 and 10 being the most common. Tungsten and lead are a necessity if you are euro nymphing/czech nymphing. It’s not a bad idea to have a few tied with brass beads, or no bead at all for those shallow small streams that have willing to eat big flies. Also, you can add Net Back Foil to this fly if you really want the segments to “pop”.
The Provo River has some fantastic fish that love to gorge themselves on caddis larva. One unforgettable summer day on the middle Provo, Kohler and I found ourselves scoring into some fine fish while fishing both woven nymphs, and Czech Nymphs. If you watch closely in this video you will see this color variation hanging out of the mouth of a very fine brown trout.
Hook: Dai-Riki 135 Sizes 8-14
Bead: Tungsten or Bronze Size 1/8″-7/64″ (Depending on hook size)
Underbody: 0.020 Lead Wire
Thread: 6/0 Uni Color – Camel
Backing Material: Clear Scud Back
Rib: 3X Monofilament
Body: Tan Hare’s Ear
Hot Spot: Pink Shrimp Sow-Scud
Collar: Natural Brown Squirrel