In the general sport of fishing, you use lures to catch your fish; however, when you are fly fishing, the word lure only marginally applies. Sure, you are trying to lure the fish to your bait, but when you are fly fishing, you use flies to entice the fish. So when we talk about lures in the sport of fly fishing, we are really speaking about flies.
You see, fish eat bugs. They rely on flies, grasshoppers, and other insects for their food source. When you are fly fishing, you attempt to mimic the look and movement of their food. Therefore, the lure that you are providing them with are called flies.
There are all sorts of fly fishing lures, or flies, that you can use depending on the area you are fishing and the type of fish you want to catch. Most of these lures are available at commercial retail outlets, but you can also make them yourself. The key is to have several different lures available to you so you can adapt to the situation you are fishing in.