Line & Hook Size Guide
Look up a sensible starting line weight, hook size, and leader for panfish, trout, bass, catfish, walleye, pike, and muskie.
Sizing up to braid for the same reel spool? A common starting point is about 28 lb braid, same strength as the top of that mono range at roughly a third the diameter.
| Species | Mono (lb test) | Hook sizes | Leader |
|---|---|---|---|
| Panfish | 2–6 | #8–#12 | n/a |
| Trout | 4–8 | #10–#14 | n/a |
| Largemouth Bass | 8–14 | #2–3/0 | n/a |
| Smallmouth Bass | 6–10 | #4–1/0 | n/a |
| Walleye | 6–10 | #4–#8 or 1/8–1/4 oz jigs | n/a |
| Channel Catfish | 15–30 | 2/0–5/0 | n/a |
| Pike / Muskie | 15–30 | 3/0–6/0 | 12-inch wire or 80 lb fluoro leader (teeth) |
How it works
Pick the species you're targeting and the tool returns a starting mono line weight, a hook size range, and a leader recommendation where the fish calls for one. These are the ranges most guides and tackle shops land on for that species, not the outer limits of what's possible.
Worked example: largemouth bass. The guide points to 8 to 14 lb mono and hooks from #2 up to 3/0, no wire leader needed since bass don't have teeth that will cut through line. Compare that to pike or muskie, which get the same 15 to 30 lb line range as catfish but add a 12-inch wire or 80 lb fluorocarbon leader, because their teeth will bite straight through unprotected mono or braid on a hard take.
If you fish braid instead of mono for better sensitivity and less stretch, the tool also suggests a braid weight for the same reel spool. For bass, that top-end 14 lb mono maps to about 28 lb braid, since braid holds the same strength at roughly a third the diameter of mono, so you can load more line without upsizing the reel.
FAQ
What does the hook size numbering actually mean?
Sizes with a # sign get smaller as the number goes up, so a #12 hook is tiny (right for panfish and small trout) and a #1 is a mid-size hook. Past #1, sizing flips and grows with the number: 1/0, 2/0, 3/0, and on up to the big 5/0 or 6/0 hooks used for catfish or muskie.
Why does walleye list jig weights instead of just a hook size?
A lot of walleye fishing is done on jigs rather than a plain hook and bait, so the practical starting point is an 1/8 to 1/4 oz jig head paired with a #4 to #8 hook if you're rigging live bait instead.
Do I really need a wire leader for pike and muskie?
Yes, if you want to keep the fish on the line. Their teeth will fray or cut straight through mono and even braid on a solid strike, so a short wire or heavy fluorocarbon leader is standard practice, not overkill.
Should I just always fish the heaviest line in the range?
Not necessarily. Heavier line is more visible in clear water and stiffer, which can hurt your presentation with light lures. Start near the lower end in clear water or with finesse baits, and move up when you're fishing heavy cover or bigger fish where you need the extra strength to pull them out.
For more on the tradeoffs between line types, see mono vs. braid vs. fluorocarbon and fishing hooks explained. If pike are on your list, check out how to catch northern pike.