Best Fillet KnifeA field guide to fillet knives
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Best Budget Fillet Knives

Our top pick is the Kershaw 9-Inch Clearwater Fillet Knife (9" blade, medium flex). The best value fillet knife: a long 9-inch blade, grippy handle, sheath and lifetime warranty for under $20, as long as you keep it sharp and dry. Runner-up: the KastKing Speed Demon Pro 9-Inch Fillet Knife.

Last updated October 17, 20267 knives

Quick comparison

Best Budget Fillet Knives, in rank order.

Best Budget Fillet Knives, in rank order.
#KnifeBest forBladePrice
1Kershaw Clearwater 9"Large freshwater and inshore saltwater fish on a budget9", medium flex$16.61
2KastKing Speed Demon 9"Salmon, striper and bigger saltwater fish on a budget9", flexible$25.49
3Rapala Fish 'n Fillet 6"Panfish, perch, walleye and trout, especially for beginners6", flexible$30.50
4Morakniv Comfort 155Trout, perch and other small-to-medium fish6.1", flexible$31.99
5KastKing Folding 6.5"Carrying a full-size fillet knife in a tackle bag, backpack or kayak6.5", flexible$25.99
6Outdoor Edge Fish & BoneA cheap, slim folding knife for trout, panfish and bird or game cleaning5", medium flex$16.95
7KastKing Speed Demon 5"Cutting bait and filleting small panfish5", stiff$18.69
  1. 1

    Kershaw 9-Inch Clearwater Fillet Knife

    Large freshwater and inshore saltwater fish on a budget

    9"

    The best value fillet knife: a long 9-inch blade, grippy handle, sheath and lifetime warranty for under $20, as long as you keep it sharp and dry.

    • 9" blade
    • Medium flex
    • 420J2 stainless steel
    • Non-slip co-polymer
    • Saltwater-ready
    • Molded ABS sheath with belt loop
    • Salmon
    • Striper
    • Snapper
    • Lake trout

    Pros

    • 9-inch blade handles salmon and other big fish for under $20
    • Handle stays grippy when wet or slimy
    • Light (3.6 oz) with a sturdy ABS sheath and belt loop
    • Kershaw limited lifetime warranty

    Cons

    • Soft 420J2 steel needs sharpening often; some buyers say it doesn't hold an edge
    • Some buyers report small rust spots on the edge, so dry it after every use
    • Long blade is less nimble on small panfish
    $16.61Price checked October 17, 2026. May have changed.
    Check price on Amazon for Kershaw 9-Inch Clearwater Fillet Knife (opens Amazon in a new tab)Review: Kershaw 9-Inch Clearwater Fillet Knife
  2. 2

    KastKing Speed Demon Pro 9-Inch Fillet Knife

    Salmon, striper and bigger saltwater fish on a budget

    9"

    The best budget 9-inch fillet knife: a long, flexible, coated blade for salmon and saltwater fish, a grippy handle and a draining sheath for about $25.

    • 9" blade
    • Flexible
    • G4116 German stainless, corrosion-resistant black coating
    • Non-slip super polymer grip
    • Saltwater-ready
    • Locking sheath with drain slots
    • Salmon
    • Striper
    • Redfish
    • Snapper

    Pros

    • Long, flexible 9-inch blade for salmon and big fish, under $30
    • Corrosion-resistant coated G4116 steel for fresh or saltwater
    • Grip stays put when wet; buyers praise the comfort
    • Most-rated manual knife we cover: 4.7 out of 5 from 3,700+ ratings

    Cons

    • Too long and flexible for small panfish
    • No sharpener in the box (knife and sheath only)
    • Still rinse and dry it after saltwater, like any knife
    $25.49Price checked October 17, 2026. May have changed.
    Check price on Amazon for KastKing Speed Demon Pro 9-Inch Fillet Knife (opens Amazon in a new tab)Review: KastKing Speed Demon Pro 9-Inch Fillet Knife
  3. 3

    Rapala Fish 'n Fillet 6-Inch Knife

    Panfish, perch, walleye and trout, especially for beginners

    6"

    The easiest fillet knife to recommend to beginners and panfish anglers: a very flexible 6-inch blade, leather sheath and sharpener for around $30.

    • 6" blade
    • Flexible
    • Swedish stainless steel, full tang
    • Varnished birch
    • Leather sheath + single-stage sharpener
    • Crappie
    • Perch
    • Walleye
    • Trout

    Pros

    • Very flexible blade, ideal for small and medium fish
    • Comes with a leather sheath and a basic sharpener
    • Classic design that has been sold for decades
    • Light and easy to control

    Cons

    • Varnished wood handle gets slippery when wet
    • Some buyers say it needed sharpening out of the box
    • Leather sheath stays damp and is a poor match for saltwater
    • Too short and too soft for large fish
    $30.50Price checked October 17, 2026. May have changed.
    Check price on Amazon for Rapala Fish 'n Fillet 6-Inch Knife (opens Amazon in a new tab)Review: Rapala Fish 'n Fillet 6-Inch Knife
  4. 4

    Morakniv Fishing Comfort Fillet 155

    Trout, perch and other small-to-medium fish

    6.1"

    A light, sharp Swedish fillet knife with better steel than most budget knives, for small and medium fish.

    • 6.1" blade
    • Flexible
    • Sandvik 12C27 stainless
    • Polymer with soft friction grip
    • Saltwater-ready
    • Plastic sheath with detachable belt clip
    • Trout
    • Perch
    • Bass
    • Mackerel

    Pros

    • Sandvik 12C27 holds an edge well and resists rust
    • Soft friction grip and finger guard; handle doesn't absorb odors
    • Very light: 3.5 oz including the sheath
    • Rated 4.8 out of 5 by Amazon buyers

    Cons

    • 6.1-inch blade is short for salmon and big saltwater fish
    • Costs more than the Kershaw, KastKing 9-inch and Fish & Bone budget picks
    $31.99Price checked October 17, 2026. May have changed.
    Check price on Amazon for Morakniv Fishing Comfort Fillet 155 (opens Amazon in a new tab)Review: Morakniv Fishing Comfort Fillet 155
  5. 5

    KastKing Folding Fillet Knife (6.5-Inch)

    Carrying a full-size fillet knife in a tackle bag, backpack or kayak

    6.5"

    The best folding fillet knife for most anglers: a flexible 6.5-inch blade that folds to 7.5 inches for a tackle bag or backpack, for under $30.

    • 6.5" blade
    • Flexible
    • Folding
    • G4116 German stainless, titanium-bonded non-stick finish
    • TPE rubber over glass-reinforced polypropylene
    • Saltwater-ready
    • Lightweight sheath with belt loop
    • Trout
    • Walleye
    • Bass
    • Pike

    Pros

    • Folds from 13.5 to 7.5 inches, so it fits in a tackle box or pack
    • Feels as solid as a fixed blade when open, according to many buyers
    • Flexible 6.5-inch G4116 blade with a non-stick, corrosion-resistant finish
    • Rated 4.7 out of 5 from more than 2,300 Amazon ratings

    Cons

    • A folding hinge traps slime, so it needs more careful cleaning than a fixed blade
    • A few buyers received one that needed sharpening out of the box
    • 6.5-inch blade is short for big salmon and saltwater fish
    $25.99Price checked October 17, 2026. May have changed.
    Check price on Amazon for KastKing Folding Fillet Knife (6.5-Inch) (opens Amazon in a new tab)Review: KastKing Folding Fillet Knife (6.5-Inch)
  6. 6

    Outdoor Edge Fish & Bone Folding Fillet Knife

    A cheap, slim folding knife for trout, panfish and bird or game cleaning

    5"

    The best cheap folding fillet knife: a slim, sharp 5-inch 440A blade with a pocket clip and belt sheath for under $20.

    • 5" blade
    • Medium flex
    • Folding
    • 440A stainless steel
    • Zytel with non-slip rubber TPR inserts
    • Saltwater-ready
    • Nylon belt sheath plus pocket clip
    • Trout
    • Crappie
    • Perch
    • Walleye

    Pros

    • Very cheap for a well-reviewed folding fillet knife
    • Slim and light (3.5 oz), with both a pocket clip and a nylon belt sheath
    • Buyers praise how sharp it is and how easily it resharpens
    • Doubles as a deboning knife for birds and game

    Cons

    • 5-inch blade is short for big fish
    • Solid handle can trap dirt and slime; clean it carefully
    • Sold by a third-party seller on Amazon when we checked
    $16.95Price checked October 17, 2026. May have changed.
    Check price on Amazon for Outdoor Edge Fish & Bone Folding Fillet Knife (opens Amazon in a new tab)Review: Outdoor Edge Fish & Bone Folding Fillet Knife
  7. 7

    KastKing Speed Demon Pro 5-Inch Bait & Fillet Knife

    Cutting bait and filleting small panfish

    5"

    A cheap, compact bait-and-fillet knife: a stiff 5-inch blade with a serrated spine for bait, and small enough for bluegill and crappie.

    • 5" blade
    • Stiff
    • G4116 German stainless
    • Non-slip super polymer grip
    • Saltwater-ready
    • Locking sheath with drain slots
    • Bluegill
    • Crappie
    • Perch
    • Cut bait

    Pros

    • Serrated spine cuts frozen bait
    • Compact 5-inch blade is precise on small fish
    • Sheath locks the handle in and drains water
    • Under $20 with a sheath and KastKing's original-owner warranty

    Cons

    • Stiff blade, not a true flexible fillet knife
    • Too short for anything above medium-sized fish
    $18.69Price checked October 17, 2026. May have changed.
    Check price on Amazon for KastKing Speed Demon Pro 5-Inch Bait & Fillet Knife (opens Amazon in a new tab)Review: KastKing Speed Demon Pro 5-Inch Bait & Fillet Knife

How we chose the best budget fillet knives

A cheap fillet knife that's sharp beats an expensive one that's dull. Budget for a basic sharpener too.

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