Best Fillet Knives for Saltwater Fish: 6 Knife Reviews

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With seafood too pricey to waste a bite, the best investment you can make as an angler is that of purchasing a fillet knife. But as you might already be aware, saltwater can be quite unforgiving. Such water tends to corrode most if not all metallic objects exposed to it.

Fortunately, there’s something you can do about this and that is by getting yourself the best fillet knife for saltwater fish. As the name suggests, these knives are designed with the challenges of saline conditions in mind. In the next few lines, we’ll talk about:

  • Some of the best fillet knives
  • Pros and cons of different knives
  • Which one of them is the best?
  • Buying guide

Filleting Knives for Saltwater Compared

Below is a detailed chart that you can use to compare different fillet knife options. The chart comes in handy when you want to make a decision on the spot. However, if you’d like to read more details, the next few paragraphs have all the details you may need.






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Rapala Heavy Duty Electric Fillet Knife

Rapala Electric

2.2 x 6 x 15.8 inches

1.8 pounds


Rapala 7 1/2 Inch Soft Grip Fillet Knife / Single...

Rapala Soft Grip 


1 pounds


Buck 0220BLS Knives Silver Creek Folding Fillet...

Buck Silver Creek 0220BLS 

0.4 x 0.4 x 0.4 inches

3.2 ounces 


Morakniv Fishing Comfort Fillet Knife with Sandvik...


14 x 5 x 1 inches

6.4 ounces


Kershaw Clearwater 9-In Fillet Knife (1259X) Fixed...

Kershaw 1259X

5 x 5 x 5 inches

6.4 ounces


Dexter P94812 Fillet Knife, 7-Inch, Narrow

Dexter 7-Inch Blade P94812


7.2 ounces

6 Best Fillet Knife for Saltwater Fish ​Reviewed

1. Rapala Electric Fillet Knife (Heavy Duty)

On Sale Today
Rapala Heavy Duty Electric Fillet Knife
453 Reviews
Rapala Heavy Duty Electric Fillet Knife
  • Made of highest quality material
  • Manufacturer: Rapala
  • Rapala heavy duty electric Fillet knife
  • Heavy Duty Motor

Fitted with 7.5-inch dishwasher safe reciprocating blades, this heavy-duty electric fillet knife from Rapala is renowned for its ability to work quickly and efficiently. In fact, the knife is so sharp that it has the ability to peel the fillet through backbones and rib bones. To cater to this power is an 8-feet power cable which supply’s the powerful motor with all the torque needed to slice through any fish.

To make sure you enjoy every bit of your filleting sessions, this unit is designed in such a manner that the vibrations are dampened. This is achieved through a custom advanced airflow outlay. This innovative design, therefore, keeps the blades and the motor running smoothly making the entire process of preparing fish fast and rewarding.

  • Comfortable and relaxed grip
  • Long power cable for extended reachLong power cable for extended reach
  • Powerful and faster than manual knives
  • Dishwasher safe and long-lasting
  • Designed to work in tough and demanding outdoor conditions
  • Even though its cord allows you 8-feet of allowance, it still limits you and adds weight to the knife in general.

2. Rapala Soft Grip Fillet Knife

On Sale Today
Rapala 7 1/2 Inch Soft Grip Fillet Knife / Single...
376 Reviews
Rapala 7 1/2 Inch Soft Grip Fillet Knife / Single...
  • This Soft Grip Fillet Knife is equipped with...
  • Soft-grip molded textured handle
  • Maximum control and comfort while filleting
  • Includes a black sheath that easily fits on...

Rapala Soft Grip Fillet Knife is a perfect boning and fillet knife. It is an essential collection to have in your kitchen and to have during your fishing escapades, camping trips, and other outdoor cooking activities as well. It is designed with a stainless steel blade.

The handle is a textured soft-grip handle, making it a no-slip knife. You will have control and comfort with this no-slip knife. The blade is 7 1/2 Inches long. It is a sharp knife and it is easy to maintain the sharpness.

When you buy this product, you will receive a black sheath, a sharpener, and the Rapala Soft Grip Fillet Knife. The black sheath fits on your belt easily. The sharpener will ensure that your knife is always sharp and performing at its utmost.

  • Good grip because of the textured handle
  • Competitively priced
  • Durable
  • A sharpener is included to help keep your knife sharp always.
  • Stainless steel blade
  • Competitively priced
  • The item cannot be shipped internationally

3. Buck Silver Creek 0220BLS Fishing Knife

Buck 0220BLS Knives Silver Creek Folding Fillet...
285 Reviews
Buck 0220BLS Knives Silver Creek Folding Fillet...
  • Silver creek folding Fillet
  • Category name: kitchen
  • Made in USA or imported

The Buck Silver Creek Fishing Knife is perfect for your home kitchen use and a perfect companion on your fishing, camping and hunting trips. It has a 6 1/2 inch stainless steel blade. Its total length is 7 ¼ inches. The blade is thin and titanium coated. It is easily sharpened.

The thin blade makes it a perfect knife for filleting as it cuts easily through to the backbone of the fish. The Buck Silver handle is made from rubber coating. It gives the Knife an anti-slip grip and it is, therefore, a very safe knife to use.

The size is convenient, for packing it for outdoor trips. What’s more, the knife is a folding knife. It can be folded close to half its size and conveniently packed using the lanyard loop.

  • Lifetime warranty
  • It is wear-resistant
  • It is wear-resistant
  • It is very sharp
  • Shipping is limited to within the United States

4. Morakniv Fishing Knives

Morakniv Fishing Comfort Fillet Knife with Sandvik...
349 Reviews
Morakniv Fishing Comfort Fillet Knife with Sandvik...
  • Stainless steel fillet knife with patterned,...
  • 6.1-inch blade is versatile enough for most...
  • Sandvik 12C27 stainless steel is known for...
  • High-friction handle allows users to maintain...

Morakniv has been in the business of making knives since 1891. Morakniv Fishing Knives are high-quality knives. They are perfect for cleaning and filleting fish. The blades are stainless steel. The blades are razor sharp, tough, corrosion resistant and hard.

The handles are patterned high-friction handles. The high-friction handle gives you control as you maintain a grip on the knife while at work on even slimy fish. Morakniv knives are available in two sizes. The 3 inch or 6.1-inch blade lengths. The 6.1 inch is ideal for cleaning and filleting most fishes, while the 3 inch is ideal for small fish size.

What’s more, the order includes a simple sheath. The sheath is rugged, and easy to clean and maintain. The 3 inch knife comes with a single belt clip whereas the 6.1-inch knife includes two belt clips.

  • Renown brand since 1891
  • A limited lifetime manufacturer’s warranty
  • Includes a sheath
  • Includes a belt clip
  • Shipping is limited to the United States

5. Kershaw 9-Inch Blade(1259X) Clearwater Fillet Knife

Kershaw Clearwater 9-In Fillet Knife (1259X) Fixed...
353 Reviews
Kershaw Clearwater 9-In Fillet Knife (1259X) Fixed...
  • 9” fixed blade made of 420J2 stainless...
  • Soft textured, co-polymer rubber grip for a...
  • Excellent knife for filleting larger fresh...
  • Keep handy in boats, tackle boxes, trucks,...

You will love Kershaw 9-inch 1259 knife. It is ideal for all your filleting needs and especially good for filleting large fish. It can fillet salt-water and larger freshwater fish alike. The knife is a handy tool to be kept in your boats, kayaks, canoes, and backpacks.

 The length of the knife is 14.25 inches, long. The blade is 9-inches and is stainless steel. It is corrosion resistant, therefore it does not rust. The knife is designed with a soft blade, that bends without breaking, making it an ideal filleting tool. The plastic handle is textured, made from co-polymer rubber, giving it a good grip.

Storing the knife while outdoors is made convenient by a sheath. What’s more the knife comes with a belt holster? In addition, the knife has neon-green highlights for easy spotting in a marine environment. The neon highlights give the knife a nice look.

  • Limited lifetime warranty
  • Renown brand since 1974
  • It cannot be shipped outside of the United States

6. Dexter 7-Inch Blade P94812 Fillet Knife

Dexter P94812 Fillet Knife, 7-Inch, Narrow
108 Reviews
Dexter P94812 Fillet Knife, 7-Inch, Narrow
  • For chefs who want Dexter quality at its most...
  • 400 series stain-free high-carbon steel blade
  • Durable and slip resistant Polypropylene...
  • Blades are hollow ground for easy edge...

The Dexter 7-inch Blade knife does a good job of boning and filleting. It is, therefore, excellent to have it in your home kitchen and on your hunting, camping and fishing trips.

It is a perfect knife to add to your knives collection. The blade is made from high carbon stainless steel and is a 7-inch narrow blade. It is easy to sharpen the blade. The handle is made from polypropylene material which is slip resistant material, therefore giving you a firm grip on the knife.

The size of the knife is perfect for filleting most fishes. The blade's length is 7-inches whereas the knife’s length is 12-inches long.

  • Competitively priced
  • Durable
  • Very sharp and therefore performs well
  • The item is not eligible for international shipping. Only shipping within the United States.
  • A sheath or belt clip is not included in the package yet it is a perfect outdoor tool

Need an affordable reel as well?

Knife Buying Guide

  • Always go for a knife made from non-corrosive materials e.g. high carbon steel and genuine stainless steel material
  • Don’t accept anything whose handle isn’t grippy, insist on a knife made with a comfortable grip e.g. rubber or traditional wood
  • If you’re targeting small fish, then a small knife would be ideal, however, a bigger (medium-sized) knife would work best for bass and trout
  • If you’d like to get the job done, faster, we’d recommend investing in an electric knife as opposed to a manual one
  • Naturally, thin blades tend to offer a slight advantage especially when jobs involving removing bones re concerned
  • Fillet knives are supposed to last long, so don’t settle for anything that’s made from substandard materials

So, how do you go about identifying an ideal saltwater fish fillet knife from one that’s not? Well, as it turns out, most manufacturers rarely differentiate or provide information on whether their knives are built for salt or fresh water. Worry not, though, because below are the basic precautions to take in order to make the right find.

Which Is Best For You?

While all the knives we’ve reviewed above are wonderful in their own right, the ultimate winner in this comparison is none other than the Rapala Heavy Duty Knife which is powered by electricity. Besides being powerful, this knife model is designed to be comfortable even after long hours of handling. So if you’re looking to clean large quantities of fish, this would ultimately be the best pick – any day.

What You Should Know About Saltwater Fillet Knives

Saltwater tends to be corrosive and given the fact that knife blades are made from metallic objects, it’s always important to keep in mind that the risk of corrosion is always at hand. Luckily, manufacturers are coming up with advanced blades that can withstand these conditions. These blades are slightly different from ones found on ordinary knives.

Final Thoughts​

As we’ve repeatedly emphasized in this best fillet knife for saltwater fish reviews, the only way to find a deal that lives up to expectations is by factoring in your specific needs.

However, if unsure, then the Rapala would be a good option to start with as it resonates with the needs of a majority of consumers. As long as you’re willing to maintain it as per the manufacturer’s recommendations and use it for its intended purpose, there’s no reason why it should let you down.