Fishing Knots: A Complete Reference

Knot strength

Every knot reduces your line below its rated breaking strength. A “100% knot” achieves the line’s full test — almost no knot actually does this, but the best come close. The rating represents the percentage of line strength the knot retains when tied correctly under controlled test conditions.

The number matters most with braid. Monofilament has elasticity that absorbs some of the shock of a bad knot; braid has none. A knot that holds fine on 20 lb mono may slip or cut through itself on 20 lb braid. This is the main reason the improved clinch — the most-taught knot of the last 60 years — has been largely replaced in modern fishing. It was designed for mono and it doesn’t transfer reliably to braid.

Knot strength is also execution-dependent. A Palomar tied with a half-closed loop tests lower than a properly formed one. Wet the knot before pulling tight — friction from a dry cinch generates heat that weakens the line at the contact point.

Quick reference

★ = the four highest rated, beginner-friendly knots that cover the majority of modern fishing situations.

Terminal knots

Terminal knots attach your line (or leader) directly to a hook, lure eye, swivel, or snap. This is the most common knot you’ll tie — every new rig, every lure change, every re-tie after a fish or a snag.

Palomar knot Core Four

The Palomar is the strongest and most versatile terminal knot in common use. It consistently tests at 95 to 100% of line strength on monofilament, fluorocarbon, and braid. The doubled line passes through the hook eye, which distributes load across two strands rather than one — that’s where most of its strength comes from.

How to tie it: double the last 6 inches of line, pass the loop through the hook eye, tie a loose overhand knot with the doubled line (leaving the hook hanging below), pass the hook through the loop, and cinch down while wetting the knot. The only limitation: large plugs with big eyes are easier to tie than small hooks, because you need to pass the hook (or an entire lure) back through the loop. For very large lures, the no-slip loop or uni is more practical.

No-slip loop knot Core Four

Also called Lefty’s loop or the non-slip mono loop. The Palomar cinches tight to the hook eye, which limits a lure’s movement. The no-slip loop creates a fixed loop that the lure hangs and swings from freely — and on many lures, that freedom of movement is the difference between a fish-catching action and a dead one.

How to tie it: tie a loose overhand knot in the line about 10 inches from the end, pass the tag end through the lure eye, back through the overhand loop, then wrap the tag end around the standing line 4—7 times (fewer wraps for heavier line), and back through the overhand loop from the same side it entered. Wet and cinch. The finished knot should sit a quarter inch from the lure eye, forming a loop the lure pivots on freely. This knot performs best on mono and fluorocarbon; braid’s slippery surface can make it harder to seat correctly.

Uni knot (Duncan loop)

The uni is the Swiss Army knife of fishing knots. As a terminal knot it ties quickly and reliably on any line type (~90% strength). Doubled up back-to-back it becomes the double uni for joining two lines. It also works for attaching line to a reel spool arbor. Many saltwater and offshore anglers fish nothing but uni variations their entire careers.

How to tie it: pass 6 inches of line through the eye, fold it back to form a loop alongside the standing line, wrap the tag end around both strands and through the loop 5—6 times, and tighten by pulling the tag end while holding the standing line. Slide down to the eye when fully set.

Snell knot Core Four

The snell wraps the line around the hook shank and exits through the eye — which aligns the pull direction with the hook point rather than off to the side. On an offset or octopus hook used with live or cut bait, a snell hookset drives the point into the fish’s mouth with maximum efficiency because the line and hook are pulling in the same plane. Standard terminal knots tied through the eye introduce a slight angle that reduces that efficiency. An old knot, but still the best choice for live bait fishing.

Improved clinch knot Legacy

For decades the improved clinch was the first knot every angler learned — and on monofilament it works reasonably well, testing at 80 to 90% depending on execution. The problem is braid. Braided line’s smooth, round fibers give the coils nothing to grip, and under sustained pressure the improved clinch slips and fails. As braid became the dominant mainline for most fishing, the improved clinch became the wrong answer to a question that used to have only one answer.

If you still fish mono exclusively — light-line trout, a float rig for panfish — the improved clinch is adequate. For any braid application, use the Palomar instead. It’s faster to tie and stronger on every line type.

Clinch knot Obsolete

The predecessor to the improved clinch, before the extra tuck was added to address its slipping problem. Tests lower than the improved clinch in every comparison (~75—85%), fails on braid just as readily, and offers no advantage over any other knot in any situation. The improved clinch was an upgrade on it; the Palomar is an upgrade on that. You’ll see the clinch in old fishing books and hear it from anglers who learned it 40 years ago and never switched. There is no reason to learn it new.

Leader connections

Most modern fishing setups run braided mainline connected to a fluorocarbon or monofilament leader. Braid’s thin diameter and zero stretch make it ideal for casting distance and sensitivity; fluorocarbon’s near-invisibility and abrasion resistance handle the business end near the fish. The knot joining them has to grip braid reliably — a quality that eliminates most traditional knots designed for mono.

Alberto knot Core Four

The Alberto is the most widely used braid-to-leader connection in inshore and nearshore fishing. It’s fast to tie once you know it, creates a slim profile that passes through guides smoothly under casting pressure, and tests at 85 to 95% of the weaker line’s breaking strength.

How to tie it: form a loop in the leader material, pass the braid through the loop and make 7 wraps forward along the leader, then 7 wraps back in the opposite direction, pass the braid back through the leader loop from the same side it entered, and tighten by pulling both tag ends and standing lines simultaneously while wetting. Trim both tags close. The key that most bad Alberto failures share: not wetting thoroughly before the final cinch, or pulling the braid tag and standing line unevenly.

FG knot

The FG knot is the benchmark for braid-to-leader connections. In controlled tests it consistently outperforms the Alberto and double uni — testing at 90 to 98% of line strength — and its profile is so slim it passes through guides with almost no resistance at all. If you’re fishing very heavy leaders for big game, or making long casts where a bulky connection catches on guides and kills distance, the FG is worth the difficulty.

The difficulty is real. The FG is tied by weaving the braid in alternating half-hitch loops around a tensioned leader — which requires three-point tension (mouth, hands, and often a knee or hook) and focus that’s hard to maintain on a rocking boat at 5 a.m. Most anglers who fish the FG tie leaders at home before launching. Once it’s in your muscle memory, it’s not as hard as it looks — but it genuinely requires dedicated practice before you can tie it quickly and correctly under pressure.

Double uni knot

Two uni knots tied back to back — one on the braid, one on the leader — that slide together to form the connection. Testing at 85 to 92%, it’s slightly weaker than the FG and Alberto but takes less than 30 seconds to tie and works on any two line types in any diameter combination. When conditions make tying an FG impractical (rough water, poor light, cold hands), the double uni is the reliable fallback.

Blood knot Legacy

The blood knot interleaves coils from two lines of similar diameter to create a clean, balanced join. It was the standard mono-to-mono connection for decades and remains the preferred knot for building tapered fly leaders, where you’re joining progressively smaller monofilament sections and diameter matching is built into the design. On fly leaders it’s still exactly right.

For braid-to-leader applications it’s effectively obsolete — it requires similar diameters to seat properly, and braid at 30 lb is far thinner than fluorocarbon at 30 lb. The Alberto or FG handles that diameter mismatch better in every way.

Surgeon’s knot

An overhand knot tied with both lines together, repeated twice. Takes ten seconds. Tests at 75 to 85% — the weakest of the leader connections covered here — but sometimes the fish are biting and you need a leader right now. The surgeon’s knot is in every angler’s mental toolkit not because it’s great but because it’s fast. If you have time, tie something else.

Specialty knots

These knots are less frequently tied but solve specific problems that terminal and leader knots can’t handle.

Bimini twist

The Bimini twist creates a long, doubled section of line at the end of your mainline by twisting the doubled line 20 times and then locking those twists with a series of half hitches. The result tests at or near 100% of line strength — the doubling compensates for the knot’s reduction, so the weakest point is the line itself, not the connection.

The loop from a Bimini attaches to leaders via a loop-to-loop connection or an Albright knot, to offshore swivels, or to the top of a tuna rig. It’s the foundation of most serious offshore terminal tackle systems. Tying it correctly requires both hands and a third point of tension — most anglers use a knee or a hook on the transom. It looks impossible the first time; after 20 repetitions it becomes second nature. If you’re targeting bluefin, yellowfin, wahoo, or any species where breaking 60+ lb braid at the knot would end your day, the Bimini is non-negotiable.

Spider hitch

The spider hitch creates a doubled line section similar to a Bimini but with a simpler series of wraps around a doubled loop. It’s faster and can be tied one-handed with practice. Testing at 80 to 90% it’s weaker than a properly tied Bimini, but a spider hitch tied quickly in rough conditions is more reliable than a Bimini tied rushed and incorrectly. Know both; reach for the Bimini when you can, the spider hitch when you can’t.

Nail knot

Used in fly fishing to attach the butt section of a leader (or tippet) to the tip of a fly line. The nail knot wraps one line around the other using a thin tube or needle as a guide tool during the tying process — which is where the “nail” name came from before purpose-built tools existed. It creates a low-profile connection that passes through rod guides cleanly. Most modern fly lines come with a factory loop welded onto the tip, which has replaced the nail knot in many setups.

Loop-to-loop connection

Not technically a knot but a connection method used extensively in fly fishing and some offshore rigs. A perfection loop or factory loop in the fly line connects to a loop in the leader butt, and a loop in the leader tip connects to a tippet loop. The linked loops slide under load and hold at near 100% of line strength. The practical advantage: you can change leaders in seconds without cutting or re-tying.