target.species
Yellowfin Tuna
Thunnus albacares
Bluewater, offshore, and the point at which "gear" becomes "equipment". Nothing in a freshwater box survives contact.
Tolerances
Every field the compatibility engine reads for this species, with what the number actually controls. Change any component outside these windows in the studio and it raises a diagnostic against the value on this page.
| Field | Value | What it controls |
|---|---|---|
| weightLb | 20 – 150 lb | Typical caught weight, not the record. Sets how much the hook, knot, and drag actually have to hold on a normal day. |
| lineLb | 50 – 130 lb | Sane mainline test window. Under the low number you get broken off; over the high number you are paying in diameter, casting distance, and bites. |
| hookSize | 5/0 – 10/0 | Printed hook-size window on the unified scale. Matched to mouth and bait size; an oversized hook is the most common reason a fish never gets pinned. |
| leaderLb | 80 – 174 lb | Leader test window. Usually at or above mainline test, because the leader is the part that meets teeth, rock, and gill plates. |
| lineShy | 0.60 | How much a visible line costs you in bites, 0 to 1. Above roughly 0.6, a low-visibility fluorocarbon leader stops being optional in clear water. |
| abrasion | 0.60 | Teeth and habitat wear, 0 to 1. Above roughly 0.85 you are into wire-leader territory; in the middle you go heavier fluoro and check your last three feet after every fish. |
| minDragLb | 25 lb | The drag floor. A reel that cannot apply this much without stalling will get spooled or will pop the knot on the surge; the builder flags any reel under it. |
| depthBias | 0.50 | 0 is surface, 1 is hard bottom. Drives how much weight you need and whether a float, a bottom rig, or a topwater is the honest presentation. |
| structure | open | Where the fish holds. Structure is what actually cuts you off, so it drives leader material as much as the fish itself does. |
| water | salt | Saltwater species: every metal component in the build must be corrosion-rated or it is consumable. |
Hook size for Yellowfin Tuna
5/0 to 10/0, with wire rated to at least 180 lb and a salt rating. Those are the two numbers the studio checks a hook against for this fish.
- hook-small · hook-large
- Below 5/0 the gap is too narrow to clear the jaw and the fish comes off. Above 10/0 it will not fit the mouth and drags a small bait down. Either raises a warning with a fix to the nearest edge.
- hook-wire-light
- A hook rated under 180 lb (1.2× a 150 lb top weight) gets flagged: once the fish turns, leverage at the point exceeds its weight.
catalogNo hook in the catalog clears both checks for this fish yet. Closest: Jungle Flippin' Hook (rated 95 lb, under the 180 lb wire floor; not salt-rated); Demon Perfect Circle (rated 90 lb, under the 180 lb wire floor).
Yellowfin Tuna against all the other species on the hook size chart →How hook sizes work →
Line for Yellowfin Tuna
50–130 lb mainline, 80–174 lb leader. Pound test is breaking strain, not thickness.
- line-light-species · line-heavy-species
- Under 50 lb every snag and headshake becomes a coin flip. Over 195 lb (1.5× the top) you are paying in casting distance and visibility for strength this fish never tests.
- no-leader-abrasion
- A leader is expected: Yellowfin Tuna rates 0.60 for abrasion (teeth, gill plates or structure) and no leader warns from 0.6. Run 80–174 lb.
- drag-floor · reel-capacity
- At least 25 lb of drag and 300 yards of line at your line's real diameter, for a fish to 150 lb.
Yellowfin Tuna against all the other species on the line chart →Braid to mono diameter chart →
Field notes
The parts that do not fit in a table. These are the judgement calls that decide whether the numbers above turn into fish.
Sustained drag is the failure point. A reel that peaks at 20 lb will fade to nothing after ninety seconds of a tuna run.
Line-shy at the boat despite their size; long fluoro wind-on leaders are the norm in clear offshore water.
You need a real vessel with real seaworthiness. This is the one build where the boat is the safety-critical component.
Recommended components
Nothing below is hand-picked. Each stage is scored by matching the item's own published spec against this species' tolerances: hook size overlap, line tests inside the window, drag headroom, rod line rating. Anything that fails a hard check is dropped rather than softened.
Mustad Demon Perfect Circle
A true circle: the point turns fully perpendicular to the shank, so it slides to the jaw hinge and sets itself when the fish turns.
tradeoff You must not swing. Reel down steadily and let it load. Every fish you miss on a circle hook, you missed by setting the hook.
Verified destination: Demon 39944 inline · 1/0 · 8 pack (2026-10-20). Other sizes or packs are not verified by this link.
fitSizes #1–10/0 cover 5/0 to 10/0 of the window. Rated 90 lb before the wire opens, 1.20× standard gauge.
Eagle Claw Lazer Sharp Circle Sea
The cheapest way to fish circle hooks correctly. Corner-of-the-mouth hookups, minimal gut-hooking, and priced so you re-tie without flinching.
tradeoff Point quality varies pack to pack and the finish is not fully offshore-grade. Fine inshore and in freshwater; check each one.
fitSizes #2–9/0 cover 5/0 to 9/0 of the window. Rated 70 lb before the wire opens, 1.10× standard gauge.
PowerPro Spectra Braided Line
The braid most people mean when they say braid. Round, tough, and thin: 30 lb PowerPro is roughly the diameter of 8 lb mono.
tradeoff Zero stretch means zero forgiveness: every head-shake goes straight to the hook hole. And it is highly visible, so clear water wants a leader.
fitSpooled in 50, 65, 80, 100 lb inside the 50–130 lb window. braid, 0.46 mm at 80 lb, visibility 0.75.
Sufix 832 Advanced Superline
Eight carriers including a GORE fibre, which makes it noticeably quieter through the guides and more abrasion-resistant than standard braid.
tradeoff A few dollars more per spool and the colour fades faster. The abrasion gain is real but it is still braid; it is not a leader.
Verified destination: 30 lb / 300 yd / Low-Vis Green (2026-10-20). Other sizes or packs are not verified by this link.
fitSpooled in 50, 65, 80 lb inside the 50–130 lb window. braid, 0.4 mm at 65 lb, visibility 0.70.
Seaguar Blue Label Fluorocarbon Leader
The benchmark fluoro leader. Refractive index close to water, so it effectively disappears, and it takes abrasion far better than mono at the same test.
tradeoff Expensive per yard and stiff at heavy tests: 60 lb Blue Label does not want to knot easily. Warm it in your hands and wet every knot.
Verified destination: 30 lb / 25 yd / Clear (2026-10-20). Other sizes or packs are not verified by this link.
fitfluoro in 80, 100 lb across the 80–174 lb leader window. Abrasion 0.85, visibility 0.08.
Yo-Zuri HD Carbon Fluorocarbon Leader
Noticeably cheaper fluoro that still hides well and knots more easily than the premium stuff because it runs a touch softer.
tradeoff Slightly thicker per test and a little less abrasion-resistant. On oyster bar and barnacle structure, spend up.
Verified destination: 80 lb / 30 yd HD Carbon (2026-10-20). Other sizes or packs are not verified by this link.
fitfluoro in 80 lb across the 80–174 lb leader window. Abrasion 0.75, visibility 0.12.
Daiwa BG MQ Spinning Reel
A one-piece machined body with no flex under load at all. This is the reel for stopping something big before it reaches structure.
tradeoff Big, heavy, and overkill for anything under about 15 lb. Putting one on a bass rod is a wasted purchase.
Verified destination: BG MQ / BGMQ6000D-H (2026-10-20). Other sizes or packs are not verified by this link.
fit33 lb max drag against a 25 lb floor, holds 350 yd of 50 lb braid. spinning, size 6000, salt-rated.
Penn Fathom II Conventional
Lever drag, machined aluminium, and the line capacity offshore work actually requires. Set strike position on the dock and never touch it again.
tradeoff It is a boat reel. Heavy, no casting finesse, and completely out of place on anything but a real conventional rod.
Verified destination: Fathom II 30 LD 2-speed (2026-10-21). Other sizes or packs are not verified by this link.
fit30 lb max drag against a 25 lb floor, holds 620 yd of 65 lb braid. conventional, size 300, salt-rated.
No rod in the catalog is line-rated into the 50–130 lb window with a salt rating yet.
Yellowfin Tuna rigs by water
A complete rig for each place Yellowfin Tuna is actually targeted, built by our solver from the catalog and checked by the same engine as the studio. Each page shows every check with the numbers.
Where you will find them
Venues that match this species' water type. Each one loads the studio with the pairing already set, so depth, current, and corrosion rules are applied before you pick a single part.
Open Surf Beach
Breaking waves and sweeping longshore current. Pyramid weights, long rods, and everything corroding as you stand there.
Inshore Flat
Skinny, clear, and spooky. Long leaders, quiet entries, and the lightest weight that still gets down.
Jetty & Pier
Barnacle-covered rock in moving water. The single most abrasive environment in this list; assume the structure is trying to cut you off.
Nearshore Reef
Structure under real depth. Getting down fast matters, and everything you hook immediately runs for a hole.
Offshore Bluewater
Miles out, deep, and unforgiving. The vessel is now the most safety-critical item in the entire build.
Venue profiles, with what each water does to a rig: Open Surf Beach, Inshore Flat, Jetty & Pier, Nearshore Reef, Offshore Bluewater.
Load Yellowfin Tuna as the target and the builder re-runs every check on this page live: hook window, line test, leader material, drag floor, as you swap parts.
Open the Rig Studio