Aluco Lures - Punk, blurple Predator Fly
Another classic colour combo, this is a great dawn or dusk fly which also works well where visibility may be a problem! White Marlin, Gts, Tarpon, Amberjack, Tuna...
The list of species caught on these goes on and on.
Freshwater Musky, Pike and Walleye anglers, and those targeting fish in coloured water use these flies to great effect too!