There are many pieces of optional equipment for fly fishing, but the obvious required gear includes a fly fishing pole, reel and vest. Flies are also obviously necessary. Choosing the pole is a personal choice in most cases. A pole that is too long for you will be difficult to handle and cast. A pole that is too short won’t give you the casts that you want. It’s best to experiment and get input from experts to determine what pole is right for you.
The reel is generally pretty standard. Some people prefer certain brands, which again is a personal choice. And the flies will depend on what you are fishing for, the time of year, and the weather conditions. Different flies are used for different fish. Different flies are also used at different times of the year depending on what insects are hatching at that point.
Some other items that are necessary would be a fishing license and a trout stamp if you’re fishing trout and it’s required in your state. It is a good idea to check the regulation book for your stamp for any special rules on the stream you may be fishing on. Some trout streams have extra regulations attached in certain states.
In addition, you will want to make sure you have a quality leader, a tippet, a dry fly floatant if using dry flies, split shot or sinkers, some fishermen like to use indicators, cutters of some sort for cutting line and other things, some type of pliers to help remove hooks, and of course a fly box. Waders may be useful if you are wading, although they are not required.