Yes, in the vast majority of cases, fly fishing uses hooks. There are numerous hooks designed to best suit your fly fishing purpose, needs and preferences. The first step in knowing which fly fishing hooks to use is to know the parts of the hook. Long handle hooks work well for imitation caddis, specifically with a slightly upward eye.
This type of hook pattern mimics an insect that rises to the surface and must be fished higher in the water than most other larval imitations. B10S: This hook has the same design as some of the low width bug hooks, and is ideal for warm water flies, streamers and some terrestrial flies. Some state rules may require that fairly caught fish be hooked inside the mouth, so check before trying this method. Matt Buchenau began fly fishing for Colorado mountain streams, beaver ponds and lakes with his parents and siblings before his age was double digits.
In their fly-catching mentality, perhaps a little less wary of aerial predators, fish will casually “drink several of these sitting duck flies, one or a bunch at a time. While the barb holds the hook, once the hook is in place, when the barb comes out, it does even more damage to the fish. Others insist, in their experience, that barbless hooks for fly fishing create more problems than they solve. Because coagulation in fish is different from that in humans, barbless hooks were suspected to contribute to increased mortality.
This works at least as well as hooking fish with flies tied on J-style hooks, and at no point did I feel like this strange tackle was causing me to lose a catch of fish. But Dave has a great technique for removing barbed hooks, and I've seen it work when a friend of ours (a much better fly fisherman) accidentally embedded his barbed hook in his finger while releasing a trout. In the meantime, I will land fish as quickly as possible, use tweezers to remove the hook, and release a trout as quickly as possible. For most trout flies, the hooks have a round curve or a spin curve, but there are a few different ones that are sometimes required, such as the Limerick curve, the York curve and the perfect curve.
This is because there are often so many natural products in the water that it can be hard to see when a fish has selected your fly. However, if the hook space is too large, it is easier for a big fish to pull it out of shape and escape.