What kind of flies do trout like?

Thats a big question my friend, and has many different answers. Trout in particular are fussy about everything from type of fly, color, and location. The five best flies that i have found to work any place i go are stereotypical, because they can match any hatch. The first thing you want to get is an caddis, preferably an elk haird caddis, they float high and are easy to see and replicate alot of bugs. you can never go wrong with a parachute adams, a royal wolf, or a terrestrail, like a hopper or an ant. The altime best fly though is whatever matches the bugs you see over the water. If you really want to slay some fish and find them fast. Use 4 pound test atleast where your fly meets your leader (tippet) and after tying the dry fly, sink a prince nymph or pheasant tail nymph by tying a line from the dry flies hook to the numph, about 2 feet down. when a fish takes the nymph your dry fly will stop, its easier than a bobber. It never hurts to throw a wooly bugger around either. The best thing to do is go to your local fishing shop and ask about what is hatching, because if you match the hatch, you catch fish...period. Happy Hunting, hope this helped!