Rising Fish Forms

Many fly fishermen leave the stream frustrated thinking "what was that trout taking?". Learning how to "read" rising fish forms is important for distinguishing what trout are feeding on. It will help the dry fly angler to understand whether a trout is feeding on an emerger, dun, or spinner. Here are a few ways to tell what stage of a mayfly trout are feeding upon.

1. Emerger...When a trout is feeding on an emerger, the first thing to remember is that most emergers are drifting by just subsurface. Trout usually do not show their head when feeding upon them. A trout showing its dorsal fin then tail followed by the fish pushing down creating a bulge, boil, or splashy take is a good indication it is feeding on an emerger. These takes can be both subtle or aggressive. Some emergers come down in large numbers drifting close to the surface such as Hendricksons and Sulphurs. These emergers are usually fed upon in a rhythmic fashion. Emergers such as March Browns which come down in fewer numbers and quickly rise to the surface are often taken in an aggressive manor.
2. Duns...Larger duns, when taken, are characterized by an obvious head- dorsal-tail rise. The word obvious is used because trout need to poke their head out farther to get their mouth over the larger size fly. Sometimes with smaller duns, it is difficult to tell whether a trout is taking a dun or spinner. A fish showing its head, dorsal, then tail is usually taking a dun, but not always. They do also take spinners with a head, dorsal, and tail rise, but it is very often more subtle. Paying attention to the water and seeing what insects are coming down in the largest numbers will often distinguish what a trout is taking.
3. Spinners...Spinners are one of the most productive flies on large rivers with good hatches. Because spinners are dead and lay flat on the water they present an easy meal for trout, which in most cases, they can not resist. A trout feeding on spinners will take head, dorsal, then tail, but at other times will just dimple taking the vulnerable meal. The rise is incredibly subtle, and the size of the fish beneath the rise is often surprisingly big. Large wild trout love spinners, as they can expend the least amount of energy. A trout taking spinners will feed similar to a fish taking duns. Trial and era is best when your still not quite sure. Just remember to look for the more subtle rise usually found in the tail of a pool or flat water.

Learning how to distinguish rising fish forms will increase your dry fly fishing success. Most anglers who have put their time in have an understanding of rising fish forms and can identify what the fish is taking 90% of the time. Watch the fish carefully, and select flies accordingly. Being able to cut a lot of the trial and era out will increase the time you fish with the correct fly. Go out and give it a try, and remember......Have Fun!!