Best Fillet Knife for Saltwater Fish (Featured Image)

8 Best Fillet Knife for Saltwater Fish [Honest Reviews]

Since most fish thrive in saltwater environments, you need to find a fillet knife whose blade is corrosion-resistant to withstand such conditions.

It can be quite confusing for you to find the best fillet knife for saltwater fish since the market has many of them with similar characteristics.

Fortunately, we are going to break it down for you, from the qualities to look for to a detailed roundup of the individual reviews.

Buying Guide for Saltwater Fillet Fish Knife

The following different elements will help you to distinguish one knife from the other to enable you to decide on the best to add to your fishing arsenal.


You must look for a knife featuring a rust-free blade for added durability. Some of these materials are; real stainless steel or high carbon steel.

Notably, a knife with a large blade works great for large fish while the one with a small blade is excellent for small-sized fish. Doing the contrary could make your work difficult and more time-consuming.

Also, the blade’s sharpness, thickness, and how it curves around helps you to determine the type of blade you’d like.

Lastly, some people prefer knives with flexible blades while others like those with stiffer ones.


You can’t deal with fish and avoid slime, blood, and water. All these slippery conditions require a knife with a sure grip for added safety. A handle can be made from either wood, plastic, or rubber.

The knife’s handle should also fit into your hand comfortably for easy blade control. This also helps minimize fatigue and strain over extended fish cleaning sessions.

Electric or manual

An electric fillet knife cuts quickly hence requiring little effort as compared to traditional ones. However, they are bulkier, large, need a source of power, need expertise, and are more expensive.

Conversely, manually-operated knives are cheaper, allow precision cutting, and are easy to use.


Though coming in last, you shouldn’t overlook it if you’d want an efficient knife but are working on a fixed budget.

Since the value for money is what you want, find out beforehand what a particular fillet knife is offering and determine whether it’s worth buying.

Best Fillet Knife for Saltwater Fish: Our Reviews

We’ve scavenged through various fillet knives for you and narrowed down on the following to be some of the best for saltwater fish.

1. KastKing 9 inch Strong Fillet Knife

Kastking 9 Inch one of the best fillet knife for saltwater

This is the ideal knife for large fish like tuna and salmon since it’s much stiffer than others. The 9.3 ounces knife boasts of an easy to sharpen German G4116 stainless steel black coated blade.

Additionally, the 9-inch blade can be used for fish boning, filleting, cutting baits, and so on as its thick enough to handle such tough tasks.

There’s more, the handle is made from a slip-resistant super polymer composite to provide a sure grip for comfortable use.

What could have been better?

We do feel like the knife could be enhanced to be more flexible for easy use. Also, the edge needs some improvements to stay sharp for longer.

  • Includes a protective sheath
  • Affordable
  • Sure-grip handle
  • Rust-free blade
  • Durable
  • The edge requires regular re-sharpening
  • Not very flexible

2. Rapala Electric Heavy Duty Fillet Knife


This Rapala fillet electric knife has triple cutting power than most standard electric knives thanks to its high-quality construction.

The incorporated 7 ½ inch blade will fulfill all your filleting needs. That’s not all, this 4.8 ounces knife’s air flow design helps reduce the motor’s vibration for a smooth and cool operation.

Also included is an 8 inches cord that connects to a 110V power source and allows you more flexibility around the working table.

Apart from providing a relaxed grip, the ergonomically designed handle ensures fatigue-free fish filleting.

What could have been better?

This knife could at least be cheaper, considering you also be incurring more power charges.

Moreover, the sharp serrated edge requires a sheath as a safeguard against injury and for safe carrying.

  • Rechargeable
  • Extra sharp blade
  • Great for large fish
  • Heavy-duty motor
  • 1-year warranty
  • Very expensive

3. BUBBA Tapered Flex 9 Inch Fillet Knife

BUBBA Tapered Flex 9 Inch Fillet Knife

BUBBA knives are renowned for their well-textured stainless steel blades and non-slip handles.

This knife is no exception as it boasts of a 9-inch blade coated with non-stick Ti-Nitride to simplify the cutting of meat and filleting of smaller fish.

The knife has an overall length of 15 inches, weighs 11.5 inches, and features a super-thin blade for easy maneuverability.

For safety purposes, the knife comes with a sheath while the belt loop allows for hands-free carrying. Similarly, the safety guards on the handle keep you off fish spines or the sharp blade.

What could have been better?

An increase in the blade flex is necessary as less of that makes filleting of much smaller fish tedious.

  • Rust-resistant coating
  • Full tang construction
  • Includes a synthetic sheath
  • Non-slip handle
  • Little blade flex

4. Rapala Soft Grip Fillet Knife

Rapala soft grip fillet knife

This complete set includes a black sheath together with a belt loop, a single-stage blade sharpener, and lastly, the knife itself.

The molded, well-textured thermoplastic handle is enhanced with a finger guard to provide a soft and secure grip.

Although a sharpener is included, the stainless steel hand-ground double taper blade’s edge remains sharp for long.

Finally, this Rapala knife’s flexible tip offers incomparable filleting hence great for delicate fish species.

What could have been better?

The handle could do better with metal rivets to prevent it from detaching from the blade.

  • Non-slip handle
  • Long-lasting cutting edge
  • Has a blade sharpener
  • Flexible blade tip
  • Very expensive
  • The handle eventually detaches from the blade

5. Buck Fillet Silver 0220BLS Creek Folding Fishing Knife


A foldable knife it is! It enables easy and convenient storage, thus safe to carry along to the beach.

This 5.9-ounce knife measures 7 5/8 inches when locked back and has a 420J2 stainless steel blade coated with titanium to enhance durability.

Furthermore, the handle features reinforced polypropylene glass with contours on the lower side and TPE rubber for easy gripping.

Good news is that your safety is catered for from the extra sharp blade as it comprises a stainless steel guard and a belt attachment lanyard.

What could have been better?

Though foldable for safekeeping, there’s a need for a sheath or a carrying case to make the set complete.

  • Rust-free titanium coated blade
  • Sharp blade
  • Foldable design
  • Flexible
  • Doesn’t come with a sheath

6. Morakniv Comfort Sandvik Blade Fishing Fillet Knife


After a successful fishing adventure, all you need is a knife like this Morakniv long knife to help you fillet the fish properly.

To meet different customer preferences, the knife is available with a Sandvik steel blade of 6.1 inches or 3.5 inches.

The 6.1-inch blade is great for filleting and cleaning fish, while the 3.5-inch blade knife works excellent on smaller pan fish for removal of bones. Also included for the longer blade knife are the sheath and 2 belt clips.

To sum up, the included high friction handle doesn’t absorb odors and helps you maintain a firm grip.

What could have been better?

The blade’s edge has to be re-sharpened often. A look into some more refinement will enhance the knife’s efficiency.

  • Dishwasher safe
  • High-quality steel blade
  • Non-slip handle
  • Available in 2 sizes
  • Loses its sharpness quickly

7. Zwilling J.A Henckels 7 Inch Fillet Knife

Zwilling fillet knife

Durability and efficient cutting performance are what this Zwilling J.A Henckels knife is here to offer you.

This SIGMAFORGE knife features a blade forged from 1-piece of steel for a seamless cutting edge.

The high carbon steel blade is stain-free, doesn’t rust, and maintains a sharp edge for long.

What could have been better?

Though the blade comes all efficient, it will be safer if it included a protective casing for secure storage.

  • Laser controlled edge
  • Super bolster for increased safety
  • Dishwasher safe
  • Well built
  • No sheath

8. Calamus Bait and Fishing Fillet Knife

Calamus Fillet Knife

This new innovative fillet knife from Calamus is a pacesetter of its standard thanks to the unique design.

The knife is offered in 5 different shapes and lengths so that you get the right one as per your expectations. That isn’t all, the golf-style non-slip rubber handle ensures whole day comfortable use.

Unlike other knives, this Calamus knife comes with a vented nylon case for efficient air circulation; this helps boost its corrosion-resistant nature.

What could have been better?

The manufacturer should retain the blade consistency from one knife to the other.

  • Razor-sharp blade
  • Slip-proofed handle
  • Includes a safety case
  • Unique construction
  • Inconsistent blade sharpness

How to Sharpen a Fillet Knife Correctly (With Videos)

Top 8 Best Electric Fillet Knives in Review [Buyer’s Guide]

Boning Knife vs Fillet Knife: Insightful Head to Head Comparison

Frequently Asked Questions

And now, we have some answers to the commonly asked questions on filleting knives. Here you go!

What is a fillet knife?

This is a knife with a long flexible blade used to debone fish, chicken, or meat.

What is the ideal size for a fish filleting knife?

There’s no precise size for a fish fillet knife as it’s determined by the type or size of fish you intend to use it on. Most standard fish filleting knives have blades ranging from 4 to 9 inches for efficient use.

What knife is best for saltwater fish?

Both steel and carbon knives are great for use on saltwater fish as long as they feature rust-resistance qualities.

Our Best Pick for Saltwater Fillet Knife

Best Fillet Knife for Saltwater Fish

According to our detailed research, the KastKing 9 inch Strong Fillet Knife stands out to be the best. Why? This is because it has a longer blade hence great for large fish, has a polymer easy-grip handle, is durable, and is offered at an affordable price.

Final Thoughts

Fillet knives are the best for separating bones from fish. However, saltwater fish require blades that are corrosion resistant to prevent them from wearing away.

The flexibility, blade quality, grip, design, and safety are some of the key features you should prioritize before ordering a fillet fish knife.

Fortunately, we have reviewed for you some of the best fish fillet knife for saltwater fish on the market. But all that is up to you is to choose!

Last Updated: 21 June 2021

Erick Thompson

Hi, I'm a fishing & kayaking enthusiast who enjoys sharing tips and tidbits with newbies, intermediates, and experienced anglers alike.

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