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Rapala

Rapala Fish n Fillet Superflex Knife

  • Length: 6 inches
  • Size: 6 inches
  • Material: Birch Wood
  • Pieces: 1

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A compact 6 inch fillet knife with a birch wood handle, sized for cleaning smaller freshwater catches rather than large fish.

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ASIN: B000PBWY1WModel: FNFSF6Category: Fillet Knives

Overview

Rapala's FNFSF6 is a 6 inch fillet knife with a birch wood handle, weighing 2.4 ounces and built for cleaning and filleting fish rather than general kitchen use.

A 6 inch blade sits on the shorter end of the fillet knife range, better suited to panfish and smaller catches than large offshore species that need more blade length to work through. The birch handle is a traditional Rapala design choice, valued for grip when wet rather than for looks.

  • 6 inch blade length
  • Birch wood handle
  • 2.4 ounce weight
  • Rapala FNFSF6 model

Who it's for

Anglers who mostly clean smaller freshwater fish like panfish, trout, or bass will appreciate the compact, light build here. Those who regularly fillet large fish will want a longer blade than 6 inches.

Pros and cons

Pros
  • Lightweight at 2.4 ounces for extended use
  • Wood handle grips well when wet
  • Compact size suits smaller fish
Cons
  • 6 inch blade is short for large fish

Performance notes

Fillet knife length is chosen to match fish size, since a longer blade lets you work through a larger fish in fewer strokes while a shorter blade like this offers more control on smaller catches. The birch handle holds grip better wet than smooth plastic handles tend to.

Specifications

BrandRapala
ModelFNFSF6
Dimensions & fit
Length6 incheslower than 89% of 45 fillet knives
Size6 incheslower than 77% of 54 fillet knives
Item Weight0.15 poundslower than 87% of 46 fillet knives
Construction & materials
MaterialBirch Wood
ColorMulti
Included components
Pieces1

Closest rivals on specs

KastKing Folding Fillet Knife
  • Item Weight 0.15 vs 0.51 pounds (-71%)
  • Length 6 vs 7.5 inches (-20%)
Cuda Fillet Flex Titanium Bonded Fish Knife 6 in
  • Item Weight 0.15 vs 0.44 pounds (-66%)
  • Length 6 vs 9 inches (-33%)
TRUSCEND Boning Knife with Sheath
  • Item Weight 0.15 vs 0.28 pounds (-46%)
  • Size 6 vs 7 inches (-14%)
Compare all side by side

Frequently asked questions

What size fish is the Rapala FNFSF6 best suited for?

Its 6 inch blade suits smaller freshwater fish like panfish and trout more than large species.

What is the handle made from?

Birch wood.

How much does the knife weigh?

2.4 ounces.