After hours of research, we’ve determined that Vitorinox make the best fish fillet knife on the market in 2020. Made in Switzerland they come with an outstanding warranty and are very reasonable too.
Having had dozens of filleting knives over the years, we’ve learned what makes a worthy filleting knife to add to the kitchen. I’ve personally been using the Victorinox for the past 6 months with no problems, even after multiple sharpenings.
We’ve reviewed multiple knives here at a range of prices, so take a look at our detailed reviews below if you’re looking for more details.
|Victorinox Cutlery 8-Inch Blade||Check Today's Price|
|DPNAO Knife||Check Today's Price|
|Wusthof Pro Flex||Check Today's Price|
Best Fillet Knife Reviews
Now you know what to look for, let’s get onto the reviews. Here are our recommendations for the best fillet knife on the market!
Victorinox Cutlery 8-Inch Blade
The Vitorinox Cultery fillet knife is an excellent choice, as it’s strong, sharp, and offers outstanding cutting precision. It’s made to the highest standards from cold-rolled stainless steel, which is both hardwearing and anti-rust. It’s easy to use this knife, and sharpening it is straightforward. But with such a sharp edge, you shouldn’t need to do frequent maintenance.
The handle is textured, so you can get a firm grip on it without slipping. We love the ergonomic shape, which makes it easy to fillet lots of fish in one go with no discomfort.
Vitorinox is so sure of the high quality and effectiveness of this knife that they offer a lifetime warranty. This is a fantastic addition – in the rare case that your knife does break, they will replace it for you. The only drawback is that they recommend you handwash this knife only.
- Non-slip, ergonomic handle
- Super-sharp stainless steel blade
- The blade has just the right amount of flex
- Lifetime warranty included
- Not recommended to go in the dishwasher
- No finger guard on this model
- It’s not a full tang blade
This striking knife works wonders on fish and looks cool, too. With its sharp stainless steel blade and red and black design, you’ll feel like a pro filleting fish with this knife. Meticulous care has been shown in designing every single detail of this knife, from the high-quality blade to the non-slip rubber handle.
The blade is made from rust-resistant stainless steel that’s super sharp, with just the right amount of blade flexibility and curvature. But we all know that a knife blade can become dull over time, but not to worry. You get a blade sharpener included with the dpnao knives, so you can fix that quickly.
The dpnao fillet knife is among the best fillet knives on the market right now. Buy this, and you’ll be all set to prepare your next catch for the dinner table!
- Non-slip handle for extra control when cutting
- One-year warranty included
- You get a sharpener and a knife sheath to store your knife safely when not in use
- Perfectly balanced steel blade makes short work of any fish
- At 9 inches long, it may be too big for smaller fish
- The sheath is on the cheap side
Wusthof Pro Flex
Wusthof designed their products for use in busy hotel and restaurant kitchens, so they need to be durable, easy to clean, and effective. This knife certainly meets these requirements and is a good choice for any angler who wants to prepare their catches to eat.
It’s made from NSF-approved German steel, so you can feel safe knowing that it meets high safety and health standards. However, it is a softer steel, which means you’ll need to sharpen it more often to keep that edge nice and sharp.
We love the ergonomic design of the handle – it fits perfectly in your hand. The flexible, 8-inch blade makes this a great all-rounder filleting knife that can handle any kind of filleting.
- Quality German steel blade construction
- The comfortable handle ensures you get a good grip
- It’s a good all-rounder size at 8 inches long
- Doesn’t keep the sharp blade edge for long
- You’ll need to sharpen the blade often – frequent maintenance required
This knife by Rada has been designed to tick all the boxes for the perfect fishing knife. The blade is made from robust, high carbon stainless steel that is sharpened meticulously by hand. It has the right amount of flesh to allow you to get around the rib cage in a neat, smooth cut. Plus, the handle is made from non-slip rubber, allowing you to use it safely, even with wet hands.
Rada backs up this impressive design with an incredible lifetime guarantee. When it comes to fillet knives, you won’t go wrong with this fishing knife. It stands out as the ideal option for any angler.
- Ergonomic, textured rubber handle
- Designed especially for anglers
- The knife is covered by an amazing lifetime guarantee
- Made in America to the highest standards
- The leather sheath is of lower quality than we’d like
If you’re looking for a versatile fillet knife set, check out this product from Havalon. You get several different blades of varying lengths, so you’ll be prepared to clean and fillet anything that you catch! The blades are razor-sharp, so you’ll need to take extreme care when swapping them out for another one. As well as two 7-inch blades, you get a 5-inch fillet blade and a 3.5-inch serrated blade. This set truly kits you out for any situation.
The knife is easy to use, with a textured, non-slip pad on the handle for increased control. You’ll have no problem using this knife, even with wet hands. Plus, you can store everything in the compact roll-pack until you need it. The Havalon Talon is a fantastic fishing knife for use on the river.
- Great, portable set for use out on the river or lake
- You can select the right blade for any size of fish
- There’s a nylon roll-pack included to store the knife safely
- It can be fiddly to swap blades
- Doesn’t have the same power that a full tang knife offers
Mister Twister Fishing
This Mister Twister knife differs from the others because it is powered by an electric motor, saving you energy and time. If you’ve been looking for an affordable alternative to a manual fillet knife, this electric knife is a great option. It works quickly and quietly and can handle all sorts of fish. You can use this knife to cut meats as well as fish, making it a versatile tool for your kitchen. The handle also has a great shape that fits snugly in hand.
Check out our top pick for the best electric fillet knife here.
The main drawback is that you’ll need to be able to plug it in. If you prefer to prepare your fish while out on the water, check out the other options on this list!
- You don’t have to put as much manpower into the cutting
- Powerful motor for efficient filleting
- Sharp blades can cut through tougher fish easily
- Comfortable handle and one-button operation
- It’s not cordless so you’ll need somewhere to plug it in
- Not a portable option
What to Look for in a Fish Fillet Knife
So, what should you look for when shopping for a new knife? There are a few important factors to keep in mind before you buy:
With a sharp fish knife, filleting is easy. That’s why the blade sharpness and material is so critical. You need a blade that is both flexible and thin, while keeping its edge so that you don’t have to sharpen it regularly. A full tang blade is a good feature to look for, as it will provide extra strength and balance the knife out well.
A stainless steel blade is best because then you have the added advantage of it being corrosion-resistant.  Fillet knives are in contact with water frequently, so you don’t want your knife to rust away. Another alternative to a stainless steel blade is to look for a blade that has a titanium coating to protect it from rust.
Handle Grip & Comfort
An ergonomic handle is an essential feature of a good boning knife. You want to be able to hold it comfortably, especially if you have a big batch of fish to work your way through. Another critical factor to look for is a non-slip handle so that you can get a firm grip on the knife and reduce the risk of slips and injuries.
Size of the Knife
The size of the knife needs to match the size of the fish that you will be filleting. The best fillet knife shouldn’t be more than 2 inches longer or shorter than the fish for safety and ease of use.
Strength & Durability
You want a fillet knife that’s durable, strong, and built to last for years. The more flexible the blade is, the less likely it will be to break during use. Look for a knife that seems sturdy and is made from high-quality materials. Some brands even offer a warranty, which is an added bonus.
The Rockwell hardness scale is useful for gauging how strong the steel is.  The strongest steels will rank high on the Rockwell hardness scale, with high carbon stainless steel right at the top. So, if you find a knife made from high carbon stainless steel, you’ll know you’ve got a winner.
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Frequently Asked Questions
What knife do you use for fish?
To fillet fish, you need a specialized fillet knife. These knives differ because they have a thin, flexible blade that is perfect for the precise cuts you need to make when filleting fish.
What is the best steel for a fillet knife?
The best steel for a fillet knife is high carbon stainless steel, as it’s both hard and rust-resistant. The higher it measures on the Rockwell scale, the better, as that means that the knife will be extra-strong. Plus, it will keep a sharp edge, reducing the need for regular maintenance.
What is the best cordless fillet knife?
There are some great cordless fillet knives out there. When it comes to the best cordless electric fillet knife, the Rapala Lithium-Ion knife comes highly recommended. It’s sturdy, robust, and sharp, and you can charge it up and take it anywhere with you.
What size fillet knife should I buy?
When it comes to choosing the right size fillet knife, you need to consider which fish you will be filleting. The blade should not be more than 2 inches longer or shorter than fish to allow you to cut cleanly and safely. Generally, a 7-inch knife makes a good all-rounder for all types of fish. But if you catch very small or larger fish, you may need to size up or down.
Investing in a fish boning knife makes the process so much easier and quicker. You need a high-quality knife that is flexible, sharp, and thin to be able to around the ribcage of the fish. Not all knives are made equally, so we searched carefully to find the best fillet knives on the market. Go for any of the recommended products above, and you won’t be disappointed!
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