Griffith's Gnat.........most probably because I can rarely see it!

I'm with you John as to not being able to catch a darn fish with the Prince Nymph. Don't have a clue as to why? I don't do a lot of nymphing anyway
but I do have some success with the Gold Ribbed Hares Ear, Zugbug, and Tellico. Old flies like me I guess!

Bob