5 Best Fillet Knife for Saltwater Fish 2021 Reviews and Guide

You need quite a number of tools when you go saltwater fishing. One of such tools is a fillet knife. Why so? Because you will need to spend ample time separating the meat from the skin and bones. The corrosive nature of saltwater, however, requires one to go for a knife that holds up to various elements. 

So, how do you go about identifying the best fillet knife for saltwater fish from the pack? Here is our selection of specially designed fillet knives for tough challenges typical of the saltwater environment. 

Best Fillet Knife for Saltwater Fish

Top 5 Best Fillet Knife Choices for Saltwater Fish

With moisture-resistant handles and corrosion resistant blades, these fillet knives will definitely stand the test of time. 

RankingsKnife for Saltwater FishDimensionsWeight
01Rapala Heavy Duty Electric Fillet Knife for saltwater fish2.2 x 6 x 15.8 inches1.76 ounces
02Rapala9 Soft Grip Fillet / Single Stage Sharpener / Sheath5 x 5 x 5 inches10.2 ounces
03Mercer Culinary Millennia 8-Inch Narrow Fillet Knife13 x 4 x 1 inches4 ounces
04Morakniv Fishing Comfort Fillet Knife with Sandvik Stainless Steel Blade, 6.1-Inch14 x 5 x 1 inches3.2 ounces
05Cuisinart CEK-40 Electric Knife12 x 4 x 5.5 inches3.37 pounds

1. Rapala Heavy-Duty Fillet Knife for Saltwater Fish, Electric Knife

This fillet knife comes from a renowned brand and is designed with durability in mind. It is made of the highest-quality materials so you will be able to use it for years to come. On top of that, it features 7 1/2 inch reciprocating blade which is a perfect size for almost all filleting needs. Other notable features include:

Powerful Motor

The knife is powered by a heavy-duty motor to provide you with twice the blade speed and thrice the power of a standard fillet knife. This makes the knife very efficient at performing all filleting tasks.

Comfortable Grip

Its handle is well-made to provide you with relaxed and superior grip for fatigue-free filleting.

Key Features

  • check 8-Inch power cord
  • check Dishwasher safe
  • check Great Blade speed
  • check Durable

2. Rapala4 Fillet Knife (Soft Grip)

Next, we have this superb knife from Rapala that features a soft grip textured handle that is molded and textured for maximum comfort. It includes a protective black sheath so you can keep the knife safe when not in use.

The sheath easily fits on any belt making the knife very easy to store and move around with. Some of its other unique features are:

Durable Blade

Its blade is crafted from Rapala’s renowned stainless steel construction for optimal durability. The steel is very hard, sharp and resistant to corrosion. 

No-slip Handle

It boasts a molded textured handle that provides lots of comfort and control as you fillet. The handle also offers you great grip while minimizing hand fatigue.

Key Features

  • check Single-stage sharpener
  • check Flexible and sharp blade
  • check No-slip handle

3. Mercer Culinary Millennia Fillet Knife, 8-Inch

Featuring a Santoprene and polypropylene handle, this fillet knife offers a great combination of comfort and durability. In addition, it features a razor-sharp edge that makes filleting a breeze and is easy to maintain. As if that’s not enough, it is NSF approved for safety, performance, and quality. Other features that make it stand out include:

Ergonomically Designed Handle

Its handle features textured finger points to provide you with secure and slip-resistant grip. Also, it spots a protective finger guard to ensure there is no chance of exposing your finger while filleting. 

Superior Quality Steel

The knife is crafted from the highest-quality carbon Japanese steel for best durability. As such, it resists discoloration, rust, and corrosion.

Key Features

  • check Limited lifetime warranty
  • check Blade is easy to maintain
  • check 8-Inch narrow blade
  • check Stain-free

You may check out our few of others articles on Best Fishing Headlamps,  Best Pole Spears, what are the best Kayaks for fishing and spinning reel under 75.

4. Morakniv Fishing Comfort Fillet Knife

Carved out of high-grade stainless steel, Morakniv has made this knife into not only rust- and corrosion-resistant but also highly durable. With proper care, it will last you a lifetime. It boasts a 6.1-inch blade hence can be used to fillet most sizes of fish with ease. Some of its key selling points include:

Solid Handle

It is equipped with a high-friction ergonomic handle that offers users great grip and control when cleaning fish even with slippery hands. Also, the handle does not absorb odors making it very hygienic. 

Highest Quality Sheath

Included with the knife is a rugged plastic sheath to securely store the knife when on the move. The sheath is easy to care for and never absorbs odors. 

Key Features

  • check Excellent toughness
  • check Limited lifetime warranty
  • check Two belt clips

5. Cuisinart CEK-40 Electric Knife

Equipped with two blades, this knife is ideal for filleting meat, slicing vegetables and loaves. It boasts an ergonomic handle that favors both right and left-handed individuals. Besides, it is equipped with a safety button to keep it locked when not in use for added safety. Other great features of the knife include:

Reliable Steel Blades

Its blades are made of high-quality stainless steel to provide the user with stay-sharp long-term performance. The blade is also corrosion resistant and BPA free. 

Solid Storage Tray

Also included is a premium wood butcher block tray for storing the knife when not in use. The tray is elegantly built to complement the style of any countertop.

Key Features

  • check Powerful motor
  • check Great safety features
  • check Corrosion resistant blades
  • check 3-year limited warranty

Buying Guide – You have to know before buy Fillet Knife

To get the perfect fillet knife for saltwater, there are a few things that you should consider including:

Corrosion and Rust Resistant

The most important factor to consider is if your filleting knife is rust and corrosion resistant. In line with this, you should consider fillet knives made of high carbon steel and stainless steel materials. These types of materials don’t get corroded by saltwater.


Using a fillet knife with a handle that offers comfortable grip can make filleting a lot easier and even quicker. The handle should have a strong non-slip grip so it does not slip from your hands especially if you are using it with wet hands.

Flexibility of the Blade

Generally, fillet knives with thick blades tend to have minimal flexibility while those with narrow blades are very flexible. Knives with good flexibility make it easy to clean small fishes with great precision. So if you will only be filleting big fish, then you can choose a knife with less flexibility.

Long-Lasting Sharpness

Using the same fillet knife for a long time tends to reduce the sharpness of the blade. You will, therefore, need to keep on sharpening the knife for best performance. To avoid this, be sure to invest in a knife that is designed to stay sharp for a very long time. 

Bottom Line

Sure, there are plenty of fillet knives for saltwater fish available for sale. But if you really want to get value for money, consider buying one of the models in this guide. Just ensure you select a model that suits your needs so you can have an easy time filleting.

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