Searching patterns are generic representations of insects that trout are likely to eat.
According to Dave Hughes in his book "Nymphs for Streams and Stillwaters" "The best searching nymph patterns -the Gold Ribbed Hare's Ear, Red Fox Squirrel, Herl Nymph, on and on - resemble more that one aquatic food form"
Czech Nymphs
Fur Nymphs
Herl Nymphs
Wire and Tinsel Bodied Nymph
