It was one of the first flies I learned to tie 35+ years ago. At the time I thought the name was Black Nosed Ace. I now tie my black nose dace, and most of my other bucktail patterns, thunder creek style. I also tie some black nose dace streamer's using synthetic wings. I have also tied them with a olive, gray, and tan wing in place of the brown. One key element that I have noticed on live dace is how dominant the black lateral line is, yet most black nose dace patterns I see the black stripe is very subdued.