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Best Fillet Knife: Top Picks and How to Choose (2026)
What is the best fillet knife? Serious Eats' 2026 winner, after filleting whole barramundi and mackerel, is the Wüsthof Classic 7-Inch Fish Fillet Knife. Testers praised its ultra-fine point, flexibility and secure grip. The budget pick is the Victorinox 8-Inch Flexible Fillet Knife. For most fish, choose a sharp, thin, flexible blade of 6 to 7.5 inches. Dalstrong's flexible Gladiator 7" Fillet Knife is $79.
Dalstrong prices are from dalstrong.com as of November 3, 2026.
Best fillet knives compared
| Knife | Who picked it | Notes |
|---|---|---|
| Wüsthof Classic 7" Fish Fillet | Serious Eats best overall (2026) | Very sharp, finely tapered tip, highly flexible |
| Shun Classic Gokujo 6" | Serious Eats best with an extreme curve | Curved boning and fillet knife |
| Victorinox 8" Flexible Fillet | Serious Eats best budget | Good value and usability |
| Zwilling Pro Fillet | Serious Eats best straight-edged | — |
| Dalstrong Gladiator 7" Flexible Fillet | Our value pick, $79 | German X50CrMoV15 steel, NSF certified |
| Dalstrong Shadow Black 6" Fillet | Our mid-range pick, $109 | Black titanium-nitride-coated blade, NSF certified |
| Dalstrong Shogun 6" Fillet | Our premium pick, $139 | AUS-10V Damascus |
Fillet knife vs boning knife
A fillet knife is thinner and more flexible, so it can glide along a fish's backbone and under its skin. A boning knife is usually shorter and stiffer, for meat and poultry: trimming silverskin and working around joints. America's Test Kitchen's favorite flexible boning knife is the Zwilling Pro 5.5". See best boning knife.
How long should a fillet knife be?
Serious Eats says 6 to 7.5 inches is ideal for all-purpose filleting. Go longer, 8 to 9 inches, for large fish such as salmon. Go shorter and stiffer for panfish and trout.
How to choose a fillet knife in 7 steps
- Sharpness first. A sharp blade gives clean cuts without hacking.
- Pick the flex. More flex follows the backbone and skin. Less flex suits meat.
- Pick a length. 6–7.5" for most fish, longer for big fish.
- Look for a fine point. It gets into tight spots, such as around the head.
- Consider a curve. A curved blade follows the fish's contours.
- Get a grippy handle. Fish are slippery, so the handle has to hold when wet.
- Get a sheath if you fish. It protects the edge in a tackle box.
Fillet knife checklist
- Sharp, thin, flexible blade
- 6–7.5" for most fish
- Fine tip
- Non-slip handle
- Hand wash and dry right away
Frequently asked questions
What is the best fillet knife?
Serious Eats' 2026 winner is the Wüsthof Classic 7-Inch Fish Fillet Knife. Its budget pick is the Victorinox 8-Inch Flexible Fillet Knife.
What length fillet knife is best?
6 to 7.5 inches handles most fish, according to Serious Eats. Choose longer blades for large fish like salmon.
Fillet knife vs boning knife: what's the difference?
A fillet knife is thinner and more flexible, for fish. A boning knife is usually shorter and stiffer, for meat and poultry.
Should a fillet knife be flexible?
Yes, for fish. Flexibility lets the blade follow the backbone and skin with little waste.
Does Dalstrong make a fillet knife?
Yes, including the Gladiator 7" Flexible Fillet ($79), Shadow Black 6" Fillet ($109) and Shogun 6" Fillet ($139), as of Nov 3, 2026.
Sources: Serious Eats Best Fish Fillet Knives (2026); America's Test Kitchen Best Flexible Boning Knives (2026); Dalstrong product pages. Checked November 3, 2026.
