The Caddis Pupa Nymph - 2 Pack is a realistic pair of caddis fly imitations after they have progressed beyond their pupal form and now, as nearly full-grown adults, must reach the surface using air bubbles trapped inside their final pupal skin and their hairy legs to rise through the water column. Caddis pupa imitations effectively target trout as they zoom about seeking to eat as many of this insect as they can before the bug fully breaks through surface film, dries wings, and escapes. Fly anglers know the feeding frenzy a large caddis hatch can create at surface level, and trout are just as active below before the pupa breaks through the topwater. Try the sub-surface hatch with this Caddis Pupa Nymph - 2 Pack! Use for brown trout, rainbow trout, brook trout Mimics a swimming caddis fly, now nearly an adult, as it makes its way to the surface water and rides just below in the surface film Technique: look for 'porpoising' trout; fish as you would any nymph on a dead drift; it may ride semi-dry in the surface film; you may also find twitching the fly slightly throughout the drift successful; or, try a tight-line high-stick approach using the leader to guide the fly in the current Qty. per Pack: 2