best fillet knife for saltwater fish

Top 15 Best Fillet Knife for Saltwater Fish | Reviews & Buying Guide

Cooking is really hard. So, it only makes sense that you give yourself the best shot possible with the best tools in the market. Of all the cooking techniques, filleting saltwater fish happens to be one of the hardest. For that reason, we’re going to help you on your hunt for the best fillet knife for saltwater fish.

But you might be wondering, “What’s so tough about this process? You just take fish and empty its insides.” First off, kudos for the confidence. But, you may be oversimplifying things a tad bit.

Filleting requires extreme precision and skill. A blunt or low-quality knife makes it unbelievably harder. Even the rat in your chef hat wouldn’t able to help you (referring to Ratatouille here).

Also, it is a huge safety risk to use a poor knife, unless you’re really into fingerless gloves.

Saltwater fish make it even harder since the chemicals in those critters take a toll on your knife. Hence, we’ve tried to find the best fillet knife to help with this tedious task. 

Top 15 Best Fillet Knife for Saltwater Fish Reviews

As we’ve mentioned, we’ve looked far and wide to find you the best fillet knives in the market. Every one of these products excels in one regard or the other.

So, who are the top contenders for the title of “the best fish fillet knife in the market”?

1. KastKing Fillet Knife-Best Bait Knife 

KastKing Fillet Knife

We kick it off with A bait knife. Yes, we know a fillet knife and bait knife aren’t the same but this product still more than gets the job done.

High-Quality Blade

5 inches is a pretty standard size for a blade. It’s not super long but it’s long enough to fillet most fish. If you need the best fillet knife for salmon this is your go-to.

The German G4116 stainless steel blade is truly top-notch. This blade is also super sharp. It has quite the edge and the serrated top adds to this edge. 


This is also a rigid product. The blade does not bend or break easily, so this knife will last a while.

Premium Handle

Super Polymer Grip on the knife’s handle gives the blade a strong grip so that it won’t slip easily. The grip feels satisfying. The non-slip grip also adds a layer of protection

Versatility and Utilities

The sheath included is of great quality and bumps up the safety feature heavily. As for its versatility, it can function as both a bait knife and a fillet knife.


  • Super sharp blade
  • Comfortable to use
  • Stiff and Strong
  • Safe for filleting fish
  • Durable and will last you long
  • Very versatile.


  • High maintenance
  • Not so flexible.

2. Rapala Fish ‘N Fillet-Best Steel for Fillet Knife

Rapala Fish 'N Fillet Knife

The second entry on our list is also an impressive product. Rapala is a go-to brand when it comes to fillet knives and this knife holds up that reputation. (If you’re confused about the Full-tang part, it’ll all make sense eventually).

Decent Blade

It’s a little on the shorter end of the scale at 4 inches. It is made of European stainless steel which is solid and durable. It’s progressively tapered, meaning the blade gets thinner as it reaches the tip.


Full-tang means that the blade extends into the handle offering a rigidity that other knives can’t compete with. The full-tang blade means that this blade won’t bend too easily but the tapered edge allows it to bend to cut corners

Birch Handle 

High-quality classic wooden handle that feels comfortable. As an added benefit, the birch handle also looks super classy.

Safety and Utilities

A leather sheath and a single-stage sharpener are included. The single-stage sharpener comes in handy.

The leather sheath and wooden handle act as good safety measures. There is also a safety notch attached to a brass connector to stop it from disconnecting.


  • Perfect rigidity
  • Stylish in terms of looks
  • Safe Utilities included.


  • Flimsy Connector.

3. Rapala Fish N Fillet Superflex- Flexibility King

Rapala 4 Inch Fillet Knife

Rapala makes its second appearance on this list with another high-quality knife. Just like the bait knife, this knife shows you why Rapala is one of the companies that dominate the market in terms of the best fillet knife for saltwater fish.

Thin Blade

Rapala seems to favor 4-inch blades. The blade is skinny and so it is sharp, flexible and easy to control. We call it Superflex for a reason.

It allows super precise cuts, making this the best fillet knife for flounder and other intricate thin fish.


PTFE coating makes the blade non-stick; meaning fish guts don’t get stuck to it mid-process The PTFE also makes this blade resistant to that stickiness most knives get from the chemicals in the fish post-filleting. 


Just like its full-tang counterpart, this knife has a brass connector. Brass ferrule keeps the blade securely in place. Leather sheath included. The leather sheath really comes in clutch here as well when it comes to keeping you safe.


  • Pretty flexible
  • Slim in size
  • Non-stick, so no kind of grease will be stuck to it 
  • Safe for use


  • A bit weak and not sturdy enough.

4. Calamus Fishing Fillet Knife-The Multitasker 

Calamus Fishing Fillet Knife

Much like the first product, Kastking’s bait knife, Calamus has also made a knife that doesn’t solely focus on filleting but does a good job in that field regardless.

High-Quality Blade 

This is a 5-inch blade which, again, is pretty standard. This knife also uses G4116 and, as mentioned before, it is a very sharp blade. Unlike its Kastking counterpart, this knife has a slight spring to it.

Non-slip Golf Rubber Handle

The grip on this knife is light and comfortable. The golf rubber texture is soothing. It also looks very cool and vibrant. The blue blade and handle really go hand-in-hand.

Safety and Utilities

A decent Nylon Sheath is Included. The non-slip grip and sheath are a nice touch as they amp up the safety. Just like KastKing’s product, this can also function as both a bait knife and a fillet knife.


  • Super sharp
  • Comfortable to use
  • Safe handling
  • Versatile and stylish
  • Slightly flexible


  • This knife is pretty high maintenance.

5. Bubba 9 Inch Flex Fillet Knife- Heavy-duty

BUBBA 9 Inch Tapered Flex Fillet Knife

With this product, we enter into new territory. It is quite different from what you’ve seen so far. This knife is much more robust than the others and an altogether different type of fillet knife.

Great Blade

This is a 9-inch Blade, meaning it literally towers over the previous products. It is also the sharpest so far. Just like our 2nd entry, this knife comes in full tang. Bubba makes this tapered blade using high carbon stainless steel.


We labeled it heavy-duty for a reason. The stainless steel can endure quite a bit. This makes the best fillet knife for redfish and other tough fish. This knife also commits to the act. It looks like it fell out of Sylvestor Stallone’s back pocket.


This coating makes it resistant to rust and easier to clean. Titanium is also known to be super strong and durable. This way, you don’t have to worry about unnecessary blunting.

Utilities and Safety 

The high-grip handle is top-notch. The included sheath provides extra protection. Thanks to the sheath, you wouldn’t have to worry about the safety of your loved ones in the kitchen anymore.


  • Highly Durable
  • Safe to use
  • Comes with a long blade
  • Stylish looking
  • Has a very sharp blade.


  • Low flexibility
  • A little too sharp for its own self.

6. KastKing Spartacus-The Gladiator

KastKing Spartacus Fillet

Let’s just take a moment to appreciate how cool the name of this product is. Naming your product after a real-life gladiator? You’ve got our attention, KastKing. This is their second product on the list and yet again, they do not disappoint.

Premier Blade 

The 7-inch Blade is a little longer than the 5-inch but it’s still standard. 8Cr14 Stainless Steel blade is a huge upgrade from the G4116. If this wasn’t called the gladiator, it may have stolen the heavy-duty title from the previous product. It isn’t jaw-dropping sharp but it certainly does the trick.

Cerakote Ceramic Coating 

Firearms use the same material, so you can imagine just how incredibly strong the coating is. Whether you use the knife to cut Maroon Clownfish or a Flame Angelfish, this baby is bound to impress you in the kitchen.

Kraton G-Polymer Handle

This handle is UV-resistant, meaning it can withstand temperature change. Along with heat resistance, the anti-slip properties are very impressive. This is also the prettiest knife on this list. The white handle is simply stunning.


Moulded Sheath is included. It isn’t horrible but we wouldn’t bank on its quality. This is because the sheath has proven to become prone to wear and tear over time.


  • Ergonomic design
  • Durable blade and handle
  • Amazing grip
  • Very sharp blade. 


  • It is very high maintenance 
  • Has a loose sheath.

7. Opinel Slim Fillet Knife-Best Folding Knife 

Opinel Slim Series Fillet Folding Knifes

The Opinel Slim series is a top-notch premium line of folding knives. Product no.15 is one of the knives dedicated to filleting. We’ll be reviewing it today.

Superb Blade

The superb 6-Inch foldable blade is decent. In fact, it is the only product on this list with fold ability. Opinel makes this slim blade using high-quality flexible stainless steel. The thin blade is very flexible, allowing precise cuts.


Its slim blade, small stature, and fold-ability allow you to fillet on the go. Needless to say, your cutting skills will only be second to the legendary Bear Grylls.


Wooden Handle with Virobloc Safety rings that keep the knife in place. The wooden handle also looks sleek and feels premium. The Virobloc rings and locks make sure the knife doesn’t dislodge mid-usage or open when not in use.


  • Portable fillet knife
  • Flexible enough
  • Stylish looking
  • Comfortable to use
  • Safe for filleting fish.


  • No sheath included
  • Not very durable.

8. Wild Fish 6-piece Fish Fillet Set- The Pro Kit

Dexter fillet knife

Meyerco has developed the complete set for any saltwater fillet enthusiast. It includes any item you may need for filleting even the toughest of fish. 

3 Knives

The 5-Inch, 6-Inch, and 7.5-Inch blades are all high-quality blades. Meyerco made the blades with 420 stainless steel. 

The 5-Inch blade comes serrated and has scaling edges. The 6-Inch blade and 7.5-Inch are both standard high-quality fillet knives. Each of the knives is sharp and definitely makes the ‘cut.’

Safety and Utilities 

The board, case and steel included all come in very handy. Soft rubber handles have a good grip. The case and grip handle are good safety measures.


This is a no-brainer. There are three knives, each specializing in a different process. This way, you can use the equipment to cut different types of saltwater fish.


  • This is one versatile knife set
  • Safe to use
  • The knife is very comfortable to hold onto
  • Super sharp blade.


  • Durability issues
  • Way too sharp for using at home.

9. Morakniv 3.5 Inch Fillet Knife-The Liliput  

best fillet knife for salmon

You read that right…this knife measures up to 3.5 inches only. It is the smallest knife on the list by a long shot and, dare we say; the cutest tool to have existed. This little guy does pack a punch, however.

High-Quality Blade

This 3.5-inch blade is tiny and we love it. Sandvik 12C27 stainless steel is also one of the best materials in the market right now as it offers a resilient defense against rust, rigidity, and sharpness.

High Friction Handle

The texture of the handle is tailor-made for gripping. Such a textured handle is very easy to hold onto for long periods of time.


This is an obvious advantage. Being as small as it is, there’s no way this knife could be heavy. However, the small size could also be a reason for people to have issues with the equipment, to begin with.


A plastic sheath and belt clip are included. These extra features will make sure you and your loved ones stay safe when the product is not in use.


  • Razor sharp blade
  • Corrosion-free
  • Very high rigidity
  • Lightweight knife
  • It is portable
  • Easy to clean: The knife is dishwasher safe.


  • Really small in size
  • Not flexible enough.

10. Rapala Fish N Fillet 7 Inch-Rapala Saltwater Fillet Knife

best fillet knife for redfish

Remember Rapala’s first product? Well, this is its older brother. The exact same knife; just a lot longer. (So, the features are basically the same.) This is the last product from Rapala and they sure do go off with a bang!

Decent Blade

The only credible difference between this and Rapala is its 7-Inch length. This product also thins out towards the edge.


Just like its smaller counterpart, this fillet knife is full-tang. You can make precise cuts with this knife thanks to its rigidity.

Birch Handle

Rapala uses the same material for the handle and it looks super classy here as well. There is also a safety notch attached to a brass connector, therefore making the product ideal for newbies with unsteady hands.

Safety and Utilities

Leather sheath and single-stage sharpener included. The leather sheath and wooden handle are equally handy here for safety.


  • Long in size
  • Perfect rigidity
  • Stylish looking knife
  • Safe to use at home.


  • Not flexible enough.

11. KastKing 6 Inch Fillet KnifeBest Knife to Cut Fish

best fillet knife for flounder

Kastking’s third entry is part of the same product line as its first. Both knives are very similar. So much so that almost all their characteristics remain the same.

High-quality Blade

Again, the only big change is the 6-inch blade. KastKing uses the G4116 stainless steel blade here as well. This knife will last just as long as the bait knife. As a specialized fillet knife, it can provide the flexibility that the bait knife was missing.

Super Polymer Grip

The knife’s handle does not change and still has the same grip so it won’t slip easily. The grip feels really satisfying.


A mid-grade sheath is included. The non-slip grip and sheath make the product pretty secure.


  • Comfortable to cut fish
  • Safe to use
  • Durable blade and handle
  • Slightly Longer than the bait knife
  • Very flexible.


  • Maintenance issues.

12. Rhinoreto Fillet Knife-The Perfect Balance 

best fillet knife for fish

This could also be one of the best fillet knife for saltwater fish in the market right now. And you can easily tell that Rhinoreto didn’t cut any corners for this knife. It’s a really well-balanced product.

Flexible and Curved Blade

The 8-Inch blade has the perfect length. 8 inches is good enough to cut any fish. This stainless steel blade is really flexible and has a desirable curve. It bends quite a bit which allows precise cuts. The blade is short of sharp right out of the box.


The blue finish on the handle looks bright and soothing. The black blade adds a sharp contrast which really makes the knife look like it’s ready to take over the world. The product is classy and very sleek, therefore being nailed to perfection.

Safety and Utilities

Sharpener and sheath are included and they are welcome additions. The high-grip rubber hand is non-slip like most other products on this list. The sheath and grip make injuries unlikely.


  • Super flexible
  • Ultra sharp blade
  • Good length
  • Stylish look
  • Safe for filleting fish at home.


  • Low rust-resistance.

13. KastKing 9 Inch Fillet Knife

Best fillet knife for tuna

You must be sick and tired of seeing the upgraded versions of the same product. Well, don’t worry, this is the last product from KastKing and we don’t see any more ways to upgrade.

High-Quality Blade

Surprise, surprise, it’s the G4116 stainless steel again. This is a lot longer, however, at 9 inches. As a specialized fillet knife, this knife is super flexible just like the 6-inch knife

Durability and Comfort

Durability doesn’t seem to be an issue for KastKing. If it ain’t broke, don’t fix it and that’s exactly what KastKing does for the super polymer grip. The grip is as comfortable as its counterparts.


The non-slip grip and sheath make the product secure, while also keeping you safe from unwanted pokes and accidents. We recommend you to keep the sheath on the product when it isn’t in use, as the tip is very sharp.


  • Very comfortable to utilize
  • Safe to use
  • It is very durable
  • Impressive length
  • Very flexible.


  • This is product is rather cumbersome.

14. Sashimi Sushi Knife 10 Inch – The Giant

Sashimi Sushi Knife 10 Inch

The largest knife on our list comes courtesy of Lucky Cook. They built it for Japanese cuisine and that calls for a LOT of fish filleting. (Funnily enough, this knife is not suitable for Japanese cuisine.)

High-Quality Blade

The 10-Inch Blade is the longest on this list. We mean it: This knife is at least an inch longer than any knife on this list this carbon stainless steel blade is top-notch. Lucky Cook has made quite the resilient knife here. This is also a moderately sharp knife.

Wooden Handle

Lucky Cook uses well-finished non-slip wood to make the handle. Other than being ergonomic, the wooden handle makes this best fillet knife for saltwater eco-friendly as well!

Comfort and Style

The wood feels premium and is very easy to handle. It also looks sleek and classy. We mean the wood is always going to look good.


  • Huge in size
  • Pretty stylish and goes with your kitchen
  • Safe to use
  • This knife is durable
  • Very sharp blade.


  • The knife is too thick
  • It’s also pretty heavy.

 15. Huntsman 6-Inch Fillet Knife-The Hunter’s Blade

Huntsman Outdoors Fillet Knife

Last up on our list, we have a product that is yet another strong contender for the best fillet knife for saltwater fish. Huntsman Outdoors made this product keeping nature in mind. You can comfortably use it in the wild.

High-Quality Blade

This 6-Inch blade has 3cr13 stainless steel at its core. 3cr13 stainless steel is currently one of the best materials on the market. It is insanely durable. Sharpening this blade is easy.

Safety and Utilities

This knife has a slip-resistant rubber handle. A lockable sheath is included. The sheath and the high-quality grip help curb any major accidents

Comfort and Style

This knife is of premium quality. Grip aside, it feels satisfying to wield and feels effortless to use. It also looks heavy-duty and really stands compared to other knives. Arnie could’ve used this against the predator.


The small stature and lockable sheath mean that you can fillet on the go. You can also carry this knife to all your outdoor barbeque parties.


  • This knife is portable
  • Highly durable 
  • Safe to use
  • Stylish looking
  • Easy maintenance.


  • It comes with a flimsy sheath.

Extra Assistance for Readers

Now that you have our list of the best fillet knives ask yourself whether you have a good fishing rod to catch the fish before filleting it. Fishing rods help you determine the accurate distance needed if you are looking for specific fishes.

Take a look at our article regarding the best fishing rod to get in 2021. An A-grade fish finder is the second most necessary tool for any angler after the fishing rod. Do check this article out to find the best fish finder for yourself if you’re searching for one.

Top 15 Best Fillet Knife for Saltwater Fish Buying Guide

Now that we’ve finally seen every possible candidate for the best fillet knife for saltwater fish. How do you pick your personal favorite?


This is possibly the most important factor when determining which knife to buy. The more you spend, the higher quality you will receive.

How you set your budget, depends. Remember to keep an amount of money aside for good steel if it is not included with the product.


The main purpose of a knife is to cut. We hope we have no disagreements there. So, it’s only natural that sharpness is high in your list of priorities.

This is especially important for filleting as it requires immense precision and dull blades simply make the process much harder.


Next up on the agenda is size. The size determines whether it’ll be the best fillet knife for flounder, for redfish, for salmon, or the best overall. You need to buy a knife whose blade length meets your purpose best.


It is vital to find a knife that you feel comfortable handling. This will depend on the material used to make the handle, the texture of its grip and even, the weight distribution.

As you’ve probably already figured, filleting fish is tough so we really can’t afford to have any handicaps.


This may seem vain but we believe how a knife looks can also be an important factor. Don’t we all enjoy using better-looking tools?


Last but not least, you should look for a knife that will last a while. We don’t go knife shopping every so often so it only makes sense to pick out an item that will satisfy you for a while.

To ensure long-term durability, make sure the knife is sturdy, strong, rust-resistant and corrosion-resistance. If it can meet these 4 criteria, the knife won’t let you down anytime soon.

Frequently Asked Questions

Why can’t I use a normal Knife to Fillet Fish?

A normal knife, by which we assume you mean a standard kitchen knife, can neither bend to cut across the bones nor break apart tough fins easily. The fillet knife is specifically designed for that purpose

Is it Difficult to Fillet Saltwater Fish?

Yes. It is a skill that takes hours of practice to learn and years to master. Having the best fillet knife for saltwater fish would make the process a lot easier, however.

How many Fillet Knife should I Buy?

This depends on how many types of fish you want to fillet. You can’t use one fillet to fillet every kind of fish. Each knife can only handle only a specific range of fish.


Filleting saltwater fish is no easy task. In fact, we’d even go as far as to say it is a momentous task. As such, we need to go into the battlefield fully prepared.

Sadly, the training is non-negotiable but the knife you chose to master the skill with is entirely down to your taste and comfort.

Every product on our list brings something different to the table and specializes in a different department. However, out of those 15 knives, only one will be the exact fit for you. This is a decision you mustn’t take lightly, young padawan. Your fillet knife shall decide your destiny.

Jokes aside, we hope our candidates for the best fillet knife for saltwater fish were adequate for you. We wish you the best of luck in making a wise and informed decision in picking out the perfect fillet knife for you and start your cooking journey on a positive note. 

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