Basic Fly-Fishing Terminology

• Fly rod: The long, flexible tool used to cast the fly line, control the presentation, set the hook, and fight a fish. Fly rods are commonly described by their length, line weight, action, and number of sections.

• Rod weight: The number that identifies the size of fly line a rod is designed to cast. A 5-weight rod is intended to cast a 5-weight fly line. The number does not describe the rod’s physical weight or the size of fish it can catch.

• Rod action: A description of where and how deeply a fly rod bends during the cast. A slow-action rod bends deeply into the lower portion of the rod. A medium-action rod provides a balance of flexibility and power. A fast-action rod bends mainly near the tip and can generate higher line speed.

• Fly reel: The device attached to the rod that stores the backing and fly line. The reel also helps control a fish when it makes a strong run.

• Drag system: The reel’s adjustable resistance system. When a fish pulls line from the reel, the drag applies pressure and helps tire the fish without placing all the strain on the tippet.

• Arbor: The central portion of the reel spool around which the backing and fly line are wound. A large-arbor reel retrieves line more quickly and can help reduce tight coils in the fly line.

• Backing: Thin, strong line attached between the reel and the fly line. It fills extra space on the reel and provides additional line when a large or powerful fish runs beyond the end of the fly line.

• Fly line: The coated, weighted line that provides the mass needed to make a fly cast. Unlike conventional fishing, the fly line—not the fly—provides most of the casting weight.

• Floating line: A fly line designed to float on the water. It is the most versatile line type for beginners and can be used for dry flies, nymphs, and some streamers.

• Sinking line: A fly line designed to sink below the surface. It is often used to present streamers or other flies at greater depths.

• Sink-tip line: A line with a floating rear section and a sinking front section. It allows the angler to place the fly below the surface while retaining some of the handling characteristics of a floating line.

• Weight-forward line: A fly line with most of its casting weight concentrated near the front. Weight-forward lines are popular because they help load the rod and cast a variety of fly sizes. A label such as WF5F means weight-forward, 5-weight, floating line.

• Leader: The clear or lightly colored connection between the fly line and the fly. Most leaders taper from a thick butt section near the fly line to a thin end near the fly.

• Tippet: The thin final section of material attached between the leader and the fly. Anglers add new tippet as the leader becomes shorter or when they need a different diameter or strength.

• Nylon tippet: A flexible tippet material commonly used for dry flies and general-purpose fishing. Nylon tends to float more readily than fluorocarbon.

• Fluorocarbon tippet: A denser tippet material commonly used for subsurface fishing. It tends to sink more readily than nylon and is resistant to abrasion.

• X-size: The sizing system used to describe tippet diameter. A larger X-number indicates thinner material. For example, 5X is thinner than 4X, and 6X is thinner than 5X.

• Artificial fly: The imitation tied to the end of the tippet. Flies may be constructed from feathers, fur, thread, wire, foam, yarn, beads, and synthetic materials.

• Fly pattern: A specific fly design or tying recipe. Examples include the Parachute Adams, Pheasant Tail, Elk Hair Caddis, Pat’s Rubber Legs, and Woolly Bugger.

• Fly size: The hook size on which the fly is tied. In the size range commonly used for trout, the number increases as the fly becomes smaller. A size 18 fly is smaller than a size 14 fly.

• Dry fly: A fly designed to float on the water’s surface. Dry flies may imitate adult mayflies, caddisflies, stoneflies, midges, ants, beetles, grasshoppers, and other surface food.

• Nymph: A subsurface fly that generally imitates an immature aquatic insect. Trout consume a large amount of their food below the surface, which makes nymph fishing highly productive.

• Emerger: A fly that imitates an insect transitioning from its underwater stage into a winged adult. Emergers are commonly presented just below, within, or immediately above the surface film.

• Wet fly: A fly designed to be fished below the surface, often while swinging through the current. Wet flies may imitate emerging insects, drowned adults, or general aquatic food.

• Streamer: A larger fly intended to imitate a minnow, sculpin, leech, crayfish, or other substantial food source. Streamers are often retrieved, stripped, swung, or otherwise moved through the water.

• Terrestrial: A fly that imitates a land-based insect that falls or is blown into the water. Common terrestrial patterns imitate ants, beetles, grasshoppers, crickets, and cicadas.

• Attractor fly: A fly designed to attract attention rather than precisely imitate a single food source. Attractor patterns often use bright colors, flash, rubber legs, or exaggerated features.

• Imitative fly: A pattern designed to closely resemble a particular insect or other natural food source in size, shape, color, and behavior.

• Beadhead: A fly with a metal, glass, or synthetic bead positioned near the front. The bead can add weight, flash, and a more pronounced profile.

• Barbless hook: A hook without a backward-facing barb on the point. Barbless hooks are easier to remove and can reduce handling time during catch-and-release fishing.

• Rig: The complete arrangement of leader, tippet, flies, weights, strike indicators, and other terminal equipment being used.

• Single-fly rig: A setup using one fly. It is simple, less likely to tangle, and often a good choice for beginners.

• Dry-dropper rig: A setup that uses a floating dry fly with a subsurface nymph attached below it. The dry fly can catch a fish and can also help indicate when a fish takes the nymph.

• Tandem rig: A setup that uses two flies at the same time. The combination may include two nymphs, two dry flies, a dry fly and a nymph, or a streamer with a trailing fly.

• Point fly: The fly positioned at the end of a multi-fly rig. In many nymph setups, the point fly is the heavier or deeper fly.

• Dropper fly: An additional fly attached above or behind another fly. It may be tied to a separate tag of tippet or to the bend of another fly’s hook.

• Strike indicator: A floating device attached to the leader to help detect when a fish takes a subsurface fly. It can also help control the depth of a nymph rig.

• Split shot: A small piece of weight attached to the leader or tippet to help the flies sink. The amount of weight is adjusted according to water depth, current speed, and the depth at which fish are feeding.

Always check local fishing regulations before using a multi-fly rig or added weight. Some waters restrict the number of flies, hook types, tackle materials, or fishing methods that may be used.

• Cast: The movement used to deliver the fly line, leader, and fly to the water. Good casting depends on smooth acceleration, proper timing, and a controlled stop rather than excessive force.

• Back cast: The portion of the cast that sends the fly line behind the angler. The line should generally straighten behind the angler before the forward cast begins.

• Forward cast: The portion of the cast that directs the line toward the target.

• Casting loop: The shape formed by the fly line as it travels through the air. A controlled loop helps produce an efficient, accurate cast.

• False cast: A cast in which the line moves back and forth through the air without landing on the water. False casting may be used to adjust distance, change direction, or dry a floating fly.

• Presentation cast: The final cast that places the fly on the water. A good presentation cast positions the fly, leader, and line for a natural drift.

• Roll cast: A cast that allows the angler to send the line forward without making a full back cast. It is useful when trees, brush, rocks, or a steep bank limit the space behind the angler.

• Reach cast: A presentation cast in which the rod is moved to one side as the line lands. This places the fly line upstream or away from the fly and can create a longer drag-free drift.

• Drift: The path the fly follows as it moves through the water. A good drift carries the fly naturally through the area where a fish is likely to see and eat it.

• Dead drift: A presentation in which the fly moves at approximately the same speed and in the same direction as the surrounding current. Dead drifts are especially important when imitating insects carried naturally by the water.

• Drag: Unnatural movement caused when the fly line or leader pulls the fly. A dry fly may skate across the surface, or a nymph may move faster or slower than the surrounding current.

• Mend: A repositioning of the fly line after or during the presentation. Mending helps reduce drag and improve the quality of the drift.

• Upstream mend: A mend that moves part of the fly line upstream. It is commonly used when faster current between the angler and the fly begins pulling the line downstream.

• Downstream mend: A mend that moves part of the line downstream. It may be used when the fly is drifting through faster water than the line closest to the angler.

• Line management: The process of controlling loose fly line during casting, drifting, retrieving, and fighting a fish. Good line management reduces tangles, excessive slack, and missed hook sets.

• Slack: Loose line between the angler and the fly. Some controlled slack helps create a natural drift, but too much slack makes it difficult to detect a strike or set the hook.

• Retrieve: The method used to bring a fly through the water. A retrieve may include short strips, long strips, pauses, twitches, or a steady hand-over-hand motion.

• Strip: A pull on the fly line made with the line hand. Stripping can move a streamer, retrieve a fly, remove slack, or prepare the line for another cast.

• Hook set: The motion used to secure the hook after a fish takes the fly.

• Trout set: A hook set generally made by lifting the rod while tightening the line. It is commonly used when fishing dry flies and nymphs for trout.

• Strip set: A hook set made by pulling firmly with the line hand while keeping the rod relatively low. It is commonly used with streamers and for many saltwater species.

• Current: The movement of water through a river or stream. Current speed affects where fish hold, how food is delivered, how quickly a fly drifts, and how an angler should position the line.

• Riffle: A shallow section of moving water that flows over rocks or gravel. Riffles are generally broken, oxygenated, and rich in aquatic insect life.

• Run: A section of river with moderate depth and relatively consistent current. Runs often contain productive feeding lanes and can hold fish throughout much of the year.

• Pool: A deeper, slower section of water. Pools can provide fish with protection from strong current, cover from predators, cooler water, and important winter habitat.

• Pocket water: Broken, turbulent water flowing around boulders and other obstructions. Fish often hold in softer water behind, beside, or immediately in front of a rock.

• Seam: The boundary between currents moving at different speeds or in different directions. Seams allow fish to hold in slower water while feeding on food delivered by faster current.

• Eddy: An area where the water circles or moves in a direction different from the main current. Eddies can collect insects and other food, but their changing currents may make presentation difficult.

• Tailout: The shallow lower end of a pool or run where the water begins to speed up before entering the next section. Fish may feed in tailouts but are often easy to disturb because the water is shallow.

• Current break: An object or river feature that reduces the force of the current. Boulders, logs, banks, ledges, and changes in depth can all create current breaks.

• Structure: A physical feature that provides fish with cover or favorable habitat. Structure may include rocks, logs, undercut banks, weed beds, drop-offs, and submerged ledges.

• Holding water: An area where a fish can remain while balancing access to food, protection from predators, suitable depth, and manageable current speed.

• Feeding lane: A current path that regularly carries insects or other food to a fish. Placing the fly in the correct feeding lane is often more important than choosing the perfect fly pattern.

• Lie: The specific location where a fish is holding. A fish’s lie may be influenced by current, cover, depth, water temperature, light, and food availability.

• Aquatic insect: An insect that spends part of its life in or near the water. The major groups encountered by trout anglers include mayflies, caddisflies, stoneflies, and midges.

• Hatch: A period when aquatic insects transition into winged adults. Fish may feed on underwater nymphs, emerging insects, adults on the surface, or returning egg-laying insects during different stages of the event.

• Rise: The visible disturbance created when a fish feeds at or near the surface. The shape and speed of the rise can provide clues about what the fish is eating.

• Rising fish: A fish that is repeatedly feeding at or near the surface. Before casting, observe its rhythm, position, and feeding lane.

• Refusal: An event in which a fish approaches or inspects the fly but does not eat it. A refusal may be caused by drag, the wrong fly size, visible tippet, an inaccurate imitation, or poor presentation.

• Match the hatch: The process of selecting a fly that resembles the food fish are currently eating. Important characteristics include size, shape, color, behavior, and position in the water.

• Playing a fish: Controlling and tiring a hooked fish while maintaining steady pressure. The goal is to land the fish efficiently without breaking the tippet or exhausting the fish unnecessarily.

• Put the fish on the reel: Retrieving enough loose line that the fish is fought using the reel and its drag system. This is particularly useful when a larger fish makes strong or repeated runs.

• Palming the reel: Applying additional resistance by lightly pressing the palm against the reel spool. Too much pressure can break the tippet.

• Landing a fish: The final stage of bringing a hooked fish under control. A rubber or rubber-coated net is generally the safest and most efficient landing tool for catch-and-release fishing.

• Keep ’Em Wet: A fish-handling approach that minimizes the amount of time a fish spends out of the water. It includes wetting your hands, keeping the fish submerged while removing the hook, avoiding dry surfaces, limiting photography time, and releasing the fish promptly.