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Edwards: How many of your flies work both in salt and fresh water? How many of these actually look like something real? The Deep Diving Shrimp is such a fly. Oliver Edward's allround Gammarus imitation works equally well everywhere you find this very widespread animal.
Let Kasper Mühlbach teach you to tie it.
Hare's Ear Bug
Bugger: Fished actively over sea weed and its likely to be mistaken for a gammarus. Same thing in a lake. Dead drifted or fished using a lift in a stream, it looks like a tumbling scud or cress bug or even a hatching caddis. What the fish think, I don't know, but it's a fact that they find it edible.
The simplest fly here
Upgrading the Gold Ribbed Hare’s Ear
Article about Susquehanna River
This is an excellent fly for short line nymphing in fast riffles--the bass hit this one very hard. Don't be afraid to tie this one large--I've seen hellgrammites 5 or 6 inches long! The ostrich herl tail gives this fly a distinctive swimming action in the water.